FKIE_CVE-2026-59946

Vulnerability from fkie_nvd - Published: 2026-07-08 20:16 - Updated: 2026-07-09 16:16
Severity
6.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Summary
Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer's binary installation flow to chmod an existing host file to a world-readable and world-executable mode during composer install, update, or require. This issue is fixed in versions 2.2.29 and 2.10.2.
References
security-advisories@github.comhttps://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0
security-advisories@github.comhttps://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1
security-advisories@github.comhttps://github.com/composer/composer/releases/tag/2.10.2
security-advisories@github.comhttps://github.com/composer/composer/releases/tag/2.2.29
security-advisories@github.comhttps://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "composer",
          "vendor": "composer",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.0, \u003c 2.2.29"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.3.0, \u003c 2.10.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer\u0027s binary installation flow to chmod an existing host file to a world-readable and world-executable mode during composer install, update, or require. This issue is fixed in versions 2.2.29 and 2.10.2."
    }
  ],
  "id": "CVE-2026-59946",
  "lastModified": "2026-07-09T16:16:48.737",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-59946",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-09T14:21:07.902689Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-08T20:16:59.707",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/releases/tag/2.10.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/releases/tag/2.2.29"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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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.
  • 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.