GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
Search

Find a vulnerability

Search criteria ⓘ Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by date instead of relevance.

    10 vulnerabilities by spectolabs

    CVE-2026-50018 (GCVE-0-2026-50018)

    Vulnerability from nvd – Published: 2026-09-11 21:28 – Updated: 2026-09-11 21:28
    VLAI
    Title
    Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions
    Summary
    Hoverfly is an open source API simulation tool. Prior to version 1.12.8, remote post-serve actions use `http.DefaultClient` without any timeout configuration. When the remote endpoint is unreachable or intentionally slow (accepts TCP connection but never responds), each triggered proxy request spawns a goroutine that blocks indefinitely on `http.DefaultClient.Do()`. An attacker can cause unbounded goroutine accumulation leading to memory exhaustion and process crash (OOM kill). Unlike local post-serve action execution, this requires no binary execution, only a URL pointing to a non-responsive endpoint. Version 1.12.8 patches the issue.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.12.8
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.12.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. Prior to version 1.12.8, remote post-serve actions use `http.DefaultClient` without any timeout configuration. When the remote endpoint is unreachable or intentionally slow (accepts TCP connection but never responds), each triggered proxy request spawns a goroutine that blocks indefinitely on `http.DefaultClient.Do()`. An attacker can cause unbounded goroutine accumulation leading to memory exhaustion and process crash (OOM kill). Unlike local post-serve action execution, this requires no binary execution, only a URL pointing to a non-responsive endpoint. Version 1.12.8 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T21:28:29.228Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-42j2-w334-qxw7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-42j2-w334-qxw7"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/pull/1228",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/pull/1228"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8"
        }
      ],
      "source": {
        "advisory": "GHSA-42j2-w334-qxw7",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50018",
    "datePublished": "2026-09-11T21:28:29.228Z",
    "dateReserved": "2026-06-02T22:46:02.579Z",
    "dateUpdated": "2026-09-11T21:28:29.228Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-50013 (GCVE-0-2026-50013)

    Vulnerability from nvd – Published: 2026-09-11 21:27 – Updated: 2026-09-11 21:27
    VLAI
    Title
    Hoverfly: Process Crash via Concurrent Map Write Race Condition in Diff Mode
    Summary
    Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff mode, the `AddDiff()` function writes to the shared `responsesDiff` map without any synchronization (no mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the concurrent map writes trigger Go's built-in race detector which causes a `fatal error: concurrent map read and map write`, immediately killing the entire Hoverfly process. This is trivially exploitable by sending multiple simultaneous requests. Version 1.12.8 patches the issue.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-820 - Missing Synchronization
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.12.8
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.12.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff mode, the `AddDiff()` function writes to the shared `responsesDiff` map without any synchronization (no mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the concurrent map writes trigger Go\u0027s built-in race detector which causes a `fatal error: concurrent map read and map write`, immediately killing the entire Hoverfly process. This is trivially exploitable by sending multiple simultaneous requests. Version 1.12.8 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-820",
              "description": "CWE-820: Missing Synchronization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T21:27:40.296Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-qrh4-p6v4-mrfg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-qrh4-p6v4-mrfg"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/pull/1227",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/pull/1227"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8"
        }
      ],
      "source": {
        "advisory": "GHSA-qrh4-p6v4-mrfg",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly: Process Crash via Concurrent Map Write Race Condition in Diff Mode"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50013",
    "datePublished": "2026-09-11T21:27:40.296Z",
    "dateReserved": "2026-06-02T22:46:02.579Z",
    "dateUpdated": "2026-09-11T21:27:40.296Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2025-54376 (GCVE-0-2025-54376)

    Vulnerability from nvd – Published: 2025-09-10 19:49 – Updated: 2025-09-10 20:05
    VLAI
    Title
    Hoverfly's WebSocket endpoint `/api/v2/ws/logs` reachable without authentication even when --auth is enabled.
    Summary
    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, Hoverfly’s admin WebSocket endpoint /api/v2/ws/logs is not protected by the same authentication middleware that guards the REST admin API. Consequently, an unauthenticated remote attacker can stream real-time application logs (information disclosure) and/or gain insight into internal file paths, request/response bodies, and other potentially sensitive data emitted in logs. Version 1.12.0 contains a fix for the issue.
    Severity
    7.8 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-09-10 20:04 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.12.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-54376",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-10T20:04:57.391952Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-10T20:05:22.071Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.12.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, Hoverfly\u2019s admin WebSocket endpoint /api/v2/ws/logs is not protected by the same authentication middleware that guards the REST admin API. Consequently, an unauthenticated remote attacker can stream real-time application logs (information disclosure) and/or gain insight into internal file paths, request/response bodies, and other potentially sensitive data emitted in logs. Version 1.12.0 contains a fix for the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-10T19:49:08.752Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-jxmr-2h4q-rhxp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-jxmr-2h4q-rhxp"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/commit/ffc2cc34563de67fe1a04f7ba5d78fa2d4564424",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/commit/ffc2cc34563de67fe1a04f7ba5d78fa2d4564424"
        }
      ],
      "source": {
        "advisory": "GHSA-jxmr-2h4q-rhxp",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly\u0027s WebSocket endpoint `/api/v2/ws/logs` reachable without authentication even when --auth is enabled."
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-54376",
    "datePublished": "2025-09-10T19:49:08.752Z",
    "dateReserved": "2025-07-21T16:12:20.733Z",
    "dateUpdated": "2025-09-10T20:05:22.071Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

    CVE-2025-54123 (GCVE-0-2025-54123)

    Vulnerability from nvd – Published: 2025-09-10 18:41 – Updated: 2025-09-10 19:48
    VLAI Shadowserver Previdian
    Title
    Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation
    Summary
    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at `/api/v2/hoverfly/middleware` endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint `/api/v2/hoverfly/middleware`. This issue is born due to combination of three code level flaws: Insufficient Input Validation in middleware.go line 94-96; Unsafe Command Execution in local_middleware.go line 14-19; and Immediate Execution During Testing in hoverfly_service.go line 173. This allows an attacker to gain remote code execution (RCE) on any system running the vulnerable Hoverfly service. Since the input is directly passed to system commands without proper checks, an attacker can upload a malicious payload or directly execute arbitrary commands (including reverse shells) on the host server with the privileges of the Hoverfly process. Commit 17e60a9bc78826deb4b782dca1c1abd3dbe60d40 in version 1.12.0 disables the set middleware API by default, and subsequent changes to documentation make users aware of the security changes of exposing the set middleware API.
    Severity
    9.8 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-09-10 18:47 UTC
    CWE
    • CWE-20 - Improper Input Validation
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: <= 1.11.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-54123",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-10T18:47:39.102101Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-10T18:47:41.647Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-r4h8-hfp2-ggmf"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.11.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at `/api/v2/hoverfly/middleware` endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint `/api/v2/hoverfly/middleware`. This issue is born due to combination of three code level flaws: Insufficient Input Validation in middleware.go line 94-96; Unsafe Command Execution in local_middleware.go line 14-19; and Immediate Execution During Testing in hoverfly_service.go line 173. This allows an attacker to gain remote code execution (RCE) on any system running the vulnerable Hoverfly service. Since the input is directly passed to system commands without proper checks, an attacker can upload a malicious payload or directly execute arbitrary commands (including reverse shells) on the host server with the privileges of the Hoverfly process. Commit 17e60a9bc78826deb4b782dca1c1abd3dbe60d40 in version 1.12.0 disables the set middleware API by default, and subsequent changes to documentation make users aware of the security changes of exposing the set middleware API."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-10T19:48:59.256Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-r4h8-hfp2-ggmf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-r4h8-hfp2-ggmf"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/commit/17e60a9bc78826deb4b782dca1c1abd3dbe60d40",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/commit/17e60a9bc78826deb4b782dca1c1abd3dbe60d40"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/commit/a9d4da7bd7269651f54542ab790d0c613d568d3e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/commit/a9d4da7bd7269651f54542ab790d0c613d568d3e"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/blob/master/core/hoverfly_service.go#L173",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/blob/master/core/hoverfly_service.go#L173"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/local_middleware.go#L13",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/local_middleware.go#L13"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/middleware.go#L93",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/middleware.go#L93"
        }
      ],
      "source": {
        "advisory": "GHSA-r4h8-hfp2-ggmf",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-54123",
    "datePublished": "2025-09-10T18:41:46.370Z",
    "dateReserved": "2025-07-16T23:53:40.509Z",
    "dateUpdated": "2025-09-10T19:48:59.256Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

    CVE-2024-45388 (GCVE-0-2024-45388)

    Vulnerability from nvd – Published: 2024-09-02 16:07 – Updated: 2024-09-03 14:22
    VLAI Shadowserver Previdian
    Title
    Arbitrary file read in the `/api/v2/simulation` endpoint in hoverfly (`GHSL-2023-274`)
    Summary
    Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be abused by an attacker to read arbitrary files from the Hoverfly server. Note that, although the code prevents absolute paths from being specified, an attacker can escape out of the `hf.Cfg.ResponsesBodyFilesPath` base path by using `../` segments and reach any arbitrary files. This issue was found using the Uncontrolled data used in path expression CodeQL query for python. Users are advised to make sure the final path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) is contained within the expected base path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, "/")`). This issue is also tracked as GHSL-2023-274.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-09-03 13:52 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.10.3
    		Create a notification for this product.
    spectolabs hoverfly Affected: 0 , < 1.10.3 (custom)
        cpe:2.3:a:spectolabs:hoverfly:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:spectolabs:hoverfly:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "hoverfly",
            "vendor": "spectolabs",
            "versions": [
              {
                "lessThan": "1.10.3",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-45388",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-03T13:52:29.019621Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-03T14:22:12.634Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.10.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be abused by an attacker to read arbitrary files from the Hoverfly server. Note that, although the code prevents absolute paths from being specified, an attacker can escape out of the `hf.Cfg.ResponsesBodyFilesPath` base path by using `../` segments and reach any arbitrary files. This issue was found using the Uncontrolled data used in path expression CodeQL query for python. Users are advised to make sure the final path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) is contained within the expected base path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, \"/\")`). This issue is also tracked as GHSL-2023-274."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-09-02T16:07:17.599Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-6xx4-x46f-f897",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-6xx4-x46f-f897"
        },
        {
          "name": "https://codeql.github.com/codeql-query-help/go/go-path-injection",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://codeql.github.com/codeql-query-help/go/go-path-injection"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.10.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.10.3"
        },
        {
          "name": "https://github.com/spectolabs/hoverfly/blob/15d6ee9ea4e0de67aec5a41c28d21dc147243da0/core/handlers/v2/simulation_handler.go#L87",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/spectolabs/hoverfly/blob/15d6ee9ea4e0de67aec5a41c28d21dc147243da0/core/handlers/v2/simulation_handler.go#L87"
        }
      ],
      "source": {
        "advisory": "GHSA-6xx4-x46f-f897",
        "discovery": "UNKNOWN"
      },
      "title": "Arbitrary file read in the `/api/v2/simulation` endpoint in hoverfly (`GHSL-2023-274`)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-45388",
    "datePublished": "2024-09-02T16:07:17.599Z",
    "dateReserved": "2024-08-28T20:21:32.801Z",
    "dateUpdated": "2024-09-03T14:22:12.634Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

    CVE-2026-50018 (GCVE-0-2026-50018)

    Vulnerability from cvelistv5 – Published: 2026-09-11 21:28 – Updated: 2026-09-11 21:28
    VLAI
    Title
    Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions
    Summary
    Hoverfly is an open source API simulation tool. Prior to version 1.12.8, remote post-serve actions use `http.DefaultClient` without any timeout configuration. When the remote endpoint is unreachable or intentionally slow (accepts TCP connection but never responds), each triggered proxy request spawns a goroutine that blocks indefinitely on `http.DefaultClient.Do()`. An attacker can cause unbounded goroutine accumulation leading to memory exhaustion and process crash (OOM kill). Unlike local post-serve action execution, this requires no binary execution, only a URL pointing to a non-responsive endpoint. Version 1.12.8 patches the issue.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.12.8
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.12.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. Prior to version 1.12.8, remote post-serve actions use `http.DefaultClient` without any timeout configuration. When the remote endpoint is unreachable or intentionally slow (accepts TCP connection but never responds), each triggered proxy request spawns a goroutine that blocks indefinitely on `http.DefaultClient.Do()`. An attacker can cause unbounded goroutine accumulation leading to memory exhaustion and process crash (OOM kill). Unlike local post-serve action execution, this requires no binary execution, only a URL pointing to a non-responsive endpoint. Version 1.12.8 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T21:28:29.228Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-42j2-w334-qxw7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-42j2-w334-qxw7"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/pull/1228",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/pull/1228"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8"
        }
      ],
      "source": {
        "advisory": "GHSA-42j2-w334-qxw7",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50018",
    "datePublished": "2026-09-11T21:28:29.228Z",
    "dateReserved": "2026-06-02T22:46:02.579Z",
    "dateUpdated": "2026-09-11T21:28:29.228Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-50013 (GCVE-0-2026-50013)

    Vulnerability from cvelistv5 – Published: 2026-09-11 21:27 – Updated: 2026-09-11 21:27
    VLAI
    Title
    Hoverfly: Process Crash via Concurrent Map Write Race Condition in Diff Mode
    Summary
    Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff mode, the `AddDiff()` function writes to the shared `responsesDiff` map without any synchronization (no mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the concurrent map writes trigger Go's built-in race detector which causes a `fatal error: concurrent map read and map write`, immediately killing the entire Hoverfly process. This is trivially exploitable by sending multiple simultaneous requests. Version 1.12.8 patches the issue.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    CWE
    • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
    • CWE-820 - Missing Synchronization
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.12.8
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.12.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff mode, the `AddDiff()` function writes to the shared `responsesDiff` map without any synchronization (no mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the concurrent map writes trigger Go\u0027s built-in race detector which causes a `fatal error: concurrent map read and map write`, immediately killing the entire Hoverfly process. This is trivially exploitable by sending multiple simultaneous requests. Version 1.12.8 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-820",
              "description": "CWE-820: Missing Synchronization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T21:27:40.296Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-qrh4-p6v4-mrfg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-qrh4-p6v4-mrfg"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/pull/1227",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/pull/1227"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8"
        }
      ],
      "source": {
        "advisory": "GHSA-qrh4-p6v4-mrfg",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly: Process Crash via Concurrent Map Write Race Condition in Diff Mode"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50013",
    "datePublished": "2026-09-11T21:27:40.296Z",
    "dateReserved": "2026-06-02T22:46:02.579Z",
    "dateUpdated": "2026-09-11T21:27:40.296Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2025-54376 (GCVE-0-2025-54376)

    Vulnerability from cvelistv5 – Published: 2025-09-10 19:49 – Updated: 2025-09-10 20:05
    VLAI
    Title
    Hoverfly's WebSocket endpoint `/api/v2/ws/logs` reachable without authentication even when --auth is enabled.
    Summary
    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, Hoverfly’s admin WebSocket endpoint /api/v2/ws/logs is not protected by the same authentication middleware that guards the REST admin API. Consequently, an unauthenticated remote attacker can stream real-time application logs (information disclosure) and/or gain insight into internal file paths, request/response bodies, and other potentially sensitive data emitted in logs. Version 1.12.0 contains a fix for the issue.
    Severity
    7.8 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-09-10 20:04 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.12.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-54376",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-10T20:04:57.391952Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-10T20:05:22.071Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.12.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, Hoverfly\u2019s admin WebSocket endpoint /api/v2/ws/logs is not protected by the same authentication middleware that guards the REST admin API. Consequently, an unauthenticated remote attacker can stream real-time application logs (information disclosure) and/or gain insight into internal file paths, request/response bodies, and other potentially sensitive data emitted in logs. Version 1.12.0 contains a fix for the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-10T19:49:08.752Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-jxmr-2h4q-rhxp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-jxmr-2h4q-rhxp"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/commit/ffc2cc34563de67fe1a04f7ba5d78fa2d4564424",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/commit/ffc2cc34563de67fe1a04f7ba5d78fa2d4564424"
        }
      ],
      "source": {
        "advisory": "GHSA-jxmr-2h4q-rhxp",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly\u0027s WebSocket endpoint `/api/v2/ws/logs` reachable without authentication even when --auth is enabled."
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-54376",
    "datePublished": "2025-09-10T19:49:08.752Z",
    "dateReserved": "2025-07-21T16:12:20.733Z",
    "dateUpdated": "2025-09-10T20:05:22.071Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

    CVE-2025-54123 (GCVE-0-2025-54123)

    Vulnerability from cvelistv5 – Published: 2025-09-10 18:41 – Updated: 2025-09-10 19:48
    VLAI Shadowserver Previdian
    Title
    Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation
    Summary
    Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at `/api/v2/hoverfly/middleware` endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint `/api/v2/hoverfly/middleware`. This issue is born due to combination of three code level flaws: Insufficient Input Validation in middleware.go line 94-96; Unsafe Command Execution in local_middleware.go line 14-19; and Immediate Execution During Testing in hoverfly_service.go line 173. This allows an attacker to gain remote code execution (RCE) on any system running the vulnerable Hoverfly service. Since the input is directly passed to system commands without proper checks, an attacker can upload a malicious payload or directly execute arbitrary commands (including reverse shells) on the host server with the privileges of the Hoverfly process. Commit 17e60a9bc78826deb4b782dca1c1abd3dbe60d40 in version 1.12.0 disables the set middleware API by default, and subsequent changes to documentation make users aware of the security changes of exposing the set middleware API.
    Severity
    9.8 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-09-10 18:47 UTC
    CWE
    • CWE-20 - Improper Input Validation
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: <= 1.11.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-54123",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-10T18:47:39.102101Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-10T18:47:41.647Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-r4h8-hfp2-ggmf"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.11.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at `/api/v2/hoverfly/middleware` endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint `/api/v2/hoverfly/middleware`. This issue is born due to combination of three code level flaws: Insufficient Input Validation in middleware.go line 94-96; Unsafe Command Execution in local_middleware.go line 14-19; and Immediate Execution During Testing in hoverfly_service.go line 173. This allows an attacker to gain remote code execution (RCE) on any system running the vulnerable Hoverfly service. Since the input is directly passed to system commands without proper checks, an attacker can upload a malicious payload or directly execute arbitrary commands (including reverse shells) on the host server with the privileges of the Hoverfly process. Commit 17e60a9bc78826deb4b782dca1c1abd3dbe60d40 in version 1.12.0 disables the set middleware API by default, and subsequent changes to documentation make users aware of the security changes of exposing the set middleware API."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-10T19:48:59.256Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-r4h8-hfp2-ggmf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-r4h8-hfp2-ggmf"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/commit/17e60a9bc78826deb4b782dca1c1abd3dbe60d40",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/commit/17e60a9bc78826deb4b782dca1c1abd3dbe60d40"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/commit/a9d4da7bd7269651f54542ab790d0c613d568d3e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/commit/a9d4da7bd7269651f54542ab790d0c613d568d3e"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/blob/master/core/hoverfly_service.go#L173",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/blob/master/core/hoverfly_service.go#L173"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/local_middleware.go#L13",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/local_middleware.go#L13"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/middleware.go#L93",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/blob/master/core/middleware/middleware.go#L93"
        }
      ],
      "source": {
        "advisory": "GHSA-r4h8-hfp2-ggmf",
        "discovery": "UNKNOWN"
      },
      "title": "Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-54123",
    "datePublished": "2025-09-10T18:41:46.370Z",
    "dateReserved": "2025-07-16T23:53:40.509Z",
    "dateUpdated": "2025-09-10T19:48:59.256Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

    CVE-2024-45388 (GCVE-0-2024-45388)

    Vulnerability from cvelistv5 – Published: 2024-09-02 16:07 – Updated: 2024-09-03 14:22
    VLAI Shadowserver Previdian
    Title
    Arbitrary file read in the `/api/v2/simulation` endpoint in hoverfly (`GHSL-2023-274`)
    Summary
    Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be abused by an attacker to read arbitrary files from the Hoverfly server. Note that, although the code prevents absolute paths from being specified, an attacker can escape out of the `hf.Cfg.ResponsesBodyFilesPath` base path by using `../` segments and reach any arbitrary files. This issue was found using the Uncontrolled data used in path expression CodeQL query for python. Users are advised to make sure the final path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) is contained within the expected base path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, "/")`). This issue is also tracked as GHSL-2023-274.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-09-03 13:52 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    SpectoLabs hoverfly Affected: < 1.10.3
    		Create a notification for this product.
    spectolabs hoverfly Affected: 0 , < 1.10.3 (custom)
        cpe:2.3:a:spectolabs:hoverfly:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:spectolabs:hoverfly:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "hoverfly",
            "vendor": "spectolabs",
            "versions": [
              {
                "lessThan": "1.10.3",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-45388",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-03T13:52:29.019621Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-03T14:22:12.634Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "hoverfly",
          "vendor": "SpectoLabs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.10.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Hoverfly is a lightweight service virtualization/ API simulation / API mocking tool for developers and testers. The `/api/v2/simulation` POST handler allows users to create new simulation views from the contents of a user-specified file. This feature can be abused by an attacker to read arbitrary files from the Hoverfly server. Note that, although the code prevents absolute paths from being specified, an attacker can escape out of the `hf.Cfg.ResponsesBodyFilesPath` base path by using `../` segments and reach any arbitrary files. This issue was found using the Uncontrolled data used in path expression CodeQL query for python. Users are advised to make sure the final path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, filePath)`) is contained within the expected base path (`filepath.Join(hf.Cfg.ResponsesBodyFilesPath, \"/\")`). This issue is also tracked as GHSL-2023-274."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-09-02T16:07:17.599Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-6xx4-x46f-f897",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-6xx4-x46f-f897"
        },
        {
          "name": "https://codeql.github.com/codeql-query-help/go/go-path-injection",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://codeql.github.com/codeql-query-help/go/go-path-injection"
        },
        {
          "name": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.10.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SpectoLabs/hoverfly/releases/tag/v1.10.3"
        },
        {
          "name": "https://github.com/spectolabs/hoverfly/blob/15d6ee9ea4e0de67aec5a41c28d21dc147243da0/core/handlers/v2/simulation_handler.go#L87",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/spectolabs/hoverfly/blob/15d6ee9ea4e0de67aec5a41c28d21dc147243da0/core/handlers/v2/simulation_handler.go#L87"
        }
      ],
      "source": {
        "advisory": "GHSA-6xx4-x46f-f897",
        "discovery": "UNKNOWN"
      },
      "title": "Arbitrary file read in the `/api/v2/simulation` endpoint in hoverfly (`GHSL-2023-274`)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-45388",
    "datePublished": "2024-09-02T16:07:17.599Z",
    "dateReserved": "2024-08-28T20:21:32.801Z",
    "dateUpdated": "2024-09-03T14:22:12.634Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}