FKIE_CVE-2026-59149

Vulnerability from fkie_nvd - Published: 2026-07-09 19:17 - Updated: 2026-07-10 19:15
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Summary
Mockoon provides way to design and run mock APIs. Prior to 9.7.0, a FILE response whose filePath embeds request data is confined by getSafeFilePath in packages/commons-server/src/libs/server/server.ts with resolvedPath.startsWith(staticBaseDir). That prefix test has no path-separator boundary, so a ../-escaped path whose absolute form string-prefixes the base directory passes, allowing an unauthenticated client to read files from sibling paths outside the served directory through HTTP sendFile, WebSocket, or callbacks. This issue is fixed in version 9.7.0.
References
security-advisories@github.comhttps://github.com/mockoon/mockoon/commit/b42bdfb7f82e83f0e81bea8e6fe41adf5ec82585
security-advisories@github.comhttps://github.com/mockoon/mockoon/pull/2255
security-advisories@github.comhttps://github.com/mockoon/mockoon/releases/tag/v9.7.0
security-advisories@github.comhttps://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2
security-advisories@github.comhttps://mockoon.com/releases/9.7.0
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mockoon",
          "vendor": "mockoon",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 9.7.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mockoon provides way to design and run mock APIs. Prior to 9.7.0, a FILE response whose filePath embeds request data is confined by getSafeFilePath in packages/commons-server/src/libs/server/server.ts with resolvedPath.startsWith(staticBaseDir). That prefix test has no path-separator boundary, so a ../-escaped path whose absolute form string-prefixes the base directory passes, allowing an unauthenticated client to read files from sibling paths outside the served directory through HTTP sendFile, WebSocket, or callbacks. This issue is fixed in version 9.7.0."
    }
  ],
  "id": "CVE-2026-59149",
  "lastModified": "2026-07-10T19:15:15.780",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-59149",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-09T18:39:47.514756Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-09T19:17:07.207",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mockoon/mockoon/commit/b42bdfb7f82e83f0e81bea8e6fe41adf5ec82585"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mockoon/mockoon/pull/2255"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mockoon/mockoon/releases/tag/v9.7.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://mockoon.com/releases/9.7.0"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-23"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.