FKIE_CVE-2026-53584

Vulnerability from fkie_nvd - Published: 2026-08-20 19:16 - Updated: 2026-08-20 20:17
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Summary
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 does not reject traversal components in a submodule path loaded from .gitmodules. The affected src/libgit2/submodule.c paths include git_submodule_lookup and git_submodule_add_setup. A crafted repository can specify a path such as ../escape-target, and applications that initialize the submodule can create directories outside the repository working tree. This issue is fixed in versions 1.8.6 and 1.9.5.
References
security-advisories@github.comhttps://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1
security-advisories@github.comhttps://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c
security-advisories@github.comhttps://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4
security-advisories@github.comhttps://github.com/libgit2/libgit2/releases/tag/v1.8.6
security-advisories@github.comhttps://github.com/libgit2/libgit2/releases/tag/v1.9.5
security-advisories@github.comhttps://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libgit2",
          "vendor": "libgit2",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.8.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.9.0, \u003c 1.9.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 does not reject traversal components in a submodule path loaded from .gitmodules. The affected src/libgit2/submodule.c paths include git_submodule_lookup and git_submodule_add_setup. A crafted repository can specify a path such as ../escape-target, and applications that initialize the submodule can create directories outside the repository working tree. This issue is fixed in versions 1.8.6 and 1.9.5."
    }
  ],
  "id": "CVE-2026-53584",
  "lastModified": "2026-08-20T20:17:34.427",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-53584",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-20T19:48:09.838175Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-20T19:16:54.680",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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