Vulnerability-Lookup

CVE-2026-63405 (GCVE-0-2026-63405)

Vulnerability from cvelistv5 – Published: 2026-09-18 16:47 – Updated: 2026-09-18 17:07

Title

AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body

Summary

AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request's application context. This issue is fixed in version 1.6.15.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-18 17:07 UTC

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/anycable/anycable/security/adv…	x_refsource_CONFIRM
https://github.com/anycable/anycable/commit/d2cba…	x_refsource_MISC
https://github.com/anycable/anycable/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
anycable	anycable	Affected: < 1.6.15	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-63405",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-18T17:07:09.768503Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-18T17:07:38.720Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "anycable",
          "vendor": "anycable",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.6.15"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request\u0027s application context. This issue is fixed in version 1.6.15."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-18T16:47:37.120Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
        },
        {
          "name": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"
        },
        {
          "name": "https://github.com/anycable/anycable/releases/tag/v1.6.15",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"
        }
      ],
      "source": {
        "advisory": "GHSA-5p54-whvp-x327",
        "discovery": "UNKNOWN"
      },
      "title": "AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-63405",
    "datePublished": "2026-09-18T16:47:37.120Z",
    "dateReserved": "2026-07-16T19:20:28.987Z",
    "dateUpdated": "2026-09-18T17:07:38.720Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63405",
      "date": "2026-09-21",
      "epss": "0.00172",
      "percentile": "0.06868"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "anycable",
                "vendor": "anycable",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.6.15"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request\u0027s application context. This issue is fixed in version 1.6.15."
          }
        ],
        "id": "CVE-2026-63405",
        "lastModified": "2026-09-18T18:17:10.130",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-63405",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-18T17:07:09.768503Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-09-18T17:16:59.463",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-345"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-63405",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-09-18T17:07:09.768503Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-09-18T17:07:19.966Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "anycable",
              "vendor": "anycable",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.6.15"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request\u0027s application context. This issue is fixed in version 1.6.15."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-345",
                  "description": "CWE-345: Insufficient Verification of Data Authenticity",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-18T16:47:37.120Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
            },
            {
              "name": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"
            },
            {
              "name": "https://github.com/anycable/anycable/releases/tag/v1.6.15",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"
            }
          ],
          "source": {
            "advisory": "GHSA-5p54-whvp-x327",
            "discovery": "UNKNOWN"
          },
          "title": "AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-63405",
        "datePublished": "2026-09-18T16:47:37.120Z",
        "dateReserved": "2026-07-16T19:20:28.987Z",
        "dateUpdated": "2026-09-18T17:07:38.720Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-63405

Vulnerability from fkie_nvd - Published: 2026-09-18 17:16 - Updated: 2026-09-18 18:17

Severity

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c
	security-advisories@github.com	https://github.com/anycable/anycable/releases/tag/v1.6.15
	security-advisories@github.com	https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "anycable",
          "vendor": "anycable",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.6.15"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the Pusher-compatible REST API in pusher/http.go includes the caller-supplied body_md5 value in the HMAC input but does not calculate the digest of the received request body or compare it with the signed value. An attacker who obtains a legitimate signed POST request can retain its query parameters and auth_signature while replacing the body, causing Handler and handleEvents to accept and broadcast attacker-selected event content. The absence of an auth_timestamp freshness check also allows the captured signature to be replayed indefinitely. This can forge server-side events, modify application state, or deliver attacker-controlled messages to WebSocket clients within the signed request\u0027s application context. This issue is fixed in version 1.6.15."
    }
  ],
  "id": "CVE-2026-63405",
  "lastModified": "2026-09-18T18:17:10.130",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63405",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-18T17:07:09.768503Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-18T17:16:59.463",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-5P54-WHVP-X327

Vulnerability from github – Published: 2026-09-18 17:16 – Updated: 2026-09-18 17:16

Summary

AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body

Details

Summary

The Pusher-compatible REST API includes body_md5 in the HMAC signature string but never computes or verifies the MD5 of the received HTTP body, allowing anyone who observes a signed request to replay it with an entirely different body.

Details

In pusher/http.go, the Handler function extracts body_md5 from the URL query string (line 169) and includes it verbatim in stringToSign (line 175). It then verifies HMAC(stringToSign, secret) == auth_signature. After verification succeeds, handleEvents reads and parses r.Body (lines 201-212) without ever computing md5(body) and comparing it against the body_md5 that was signed. The Pusher protocol specification explicitly requires the server to verify this digest to prevent body-substitution attacks. There is also no auth_timestamp staleness check, so replays are valid indefinitely.

PoC

Capture a legitimate signed POST to /apps/<app_id>/events?auth_key=K&auth_timestamp=T&auth_version=1.0&body_md5=LEGIT_MD5&auth_signature=SIG carrying body {"name":"safe-event","channel":"ch","data":"..."} (e.g., from TLS-terminating load-balancer logs).
Send a new request with the same query string parameters but a different body: {"name":"injected-event","channel":"admin","data":"malicious-payload"}
The server accepts the request (HMAC over stringToSign matches the original) and broadcasts the injected event to all subscribers of admin.

Impact

An attacker who can read any single signed Pusher API request (from logs, a shared proxy, or a network tap) can broadcast arbitrary events to any channel indefinitely, potentially forging server-side events, corrupting application state, or delivering phishing messages to WebSocket clients.

Fix

After reading r.Body, compute hex(md5(body)) and compare it to the body_md5 query parameter using a constant-time comparison before proceeding. Additionally, reject requests whose auth_timestamp is more than 600 seconds from the current time.

Severity

5.9 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.6.14"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/anycable/anycable"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-63405"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-18T17:16:25Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\nThe Pusher-compatible REST API includes `body_md5` in the HMAC signature string but never computes or verifies the MD5 of the received HTTP body, allowing anyone who observes a signed request to replay it with an entirely different body.\n\n### Details\nIn `pusher/http.go`, the `Handler` function extracts `body_md5` from the URL query string (line 169) and includes it verbatim in `stringToSign` (line 175). It then verifies `HMAC(stringToSign, secret) == auth_signature`. After verification succeeds, `handleEvents` reads and parses `r.Body` (lines 201-212) without ever computing `md5(body)` and comparing it against the `body_md5` that was signed. The Pusher protocol specification explicitly requires the server to verify this digest to prevent body-substitution attacks. There is also no `auth_timestamp` staleness check, so replays are valid indefinitely.\n\n### PoC\n1. Capture a legitimate signed POST to `/apps/\u003capp_id\u003e/events?auth_key=K\u0026auth_timestamp=T\u0026auth_version=1.0\u0026body_md5=LEGIT_MD5\u0026auth_signature=SIG` carrying body `{\"name\":\"safe-event\",\"channel\":\"ch\",\"data\":\"...\"}` (e.g., from TLS-terminating load-balancer logs).\n2. Send a new request with the same query string parameters but a different body:\n   `{\"name\":\"injected-event\",\"channel\":\"admin\",\"data\":\"malicious-payload\"}`\n3. The server accepts the request (HMAC over `stringToSign` matches the original) and broadcasts the injected event to all subscribers of `admin`.\n\n### Impact\nAn attacker who can read any single signed Pusher API request (from logs, a shared proxy, or a network tap) can broadcast arbitrary events to any channel indefinitely, potentially forging server-side events, corrupting application state, or delivering phishing messages to WebSocket clients.\n\n### Fix\nAfter reading `r.Body`, compute `hex(md5(body))` and compare it to the `body_md5` query parameter using a constant-time comparison before proceeding. Additionally, reject requests whose `auth_timestamp` is more than 600 seconds from the current time.",
  "id": "GHSA-5p54-whvp-x327",
  "modified": "2026-09-18T17:16:25Z",
  "published": "2026-09-18T17:16:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/anycable/anycable/security/advisories/GHSA-5p54-whvp-x327"
    },
    {
      "type": "WEB",
      "url": "https://github.com/anycable/anycable/commit/d2cbadec792f038f4695c84a65c0d957b0fde72c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/anycable/anycable"
    },
    {
      "type": "WEB",
      "url": "https://github.com/anycable/anycable/releases/tag/v1.6.15"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-63405 (GCVE-0-2026-63405)

FKIE_CVE-2026-63405

GHSA-5P54-WHVP-X327

Summary

Details

PoC

Impact

Fix

Tags

Sightings

Nomenclature

Related by attack behaviour