ubuntu-cve-2026-33762
Vulnerability from osv_ubuntu
Published
2026-03-31 15:16
Modified
2026-07-02 16:13
Summary
Details

go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.

Severity
2.8 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "go-git",
            "binary_version": "5.4.2-3ubuntu0.1~esm2"
          },
          {
            "binary_name": "golang-github-go-git-go-git-dev",
            "binary_version": "5.4.2-3ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "golang-github-go-git-go-git",
        "purl": "pkg:deb/ubuntu/golang-github-go-git-go-git@5.4.2-3ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.2-3",
        "5.4.2-3ubuntu0.1~esm1",
        "5.4.2-3ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "go-git",
            "binary_version": "5.4.2-4ubuntu0.24.04.3+esm3"
          },
          {
            "binary_name": "golang-github-go-git-go-git-dev",
            "binary_version": "5.4.2-4ubuntu0.24.04.3+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "golang-github-go-git-go-git",
        "purl": "pkg:deb/ubuntu/golang-github-go-git-go-git@5.4.2-4ubuntu0.24.04.3+esm3?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.2-3build1",
        "5.4.2-4",
        "5.4.2-4ubuntu0.24.04.1",
        "5.4.2-4ubuntu0.24.04.2",
        "5.4.2-4ubuntu0.24.04.2+esm1",
        "5.4.2-4ubuntu0.24.04.3",
        "5.4.2-4ubuntu0.24.04.3+esm1",
        "5.4.2-4ubuntu0.24.04.3+esm2",
        "5.4.2-4ubuntu0.24.04.3+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "go-git",
            "binary_version": "5.14.0-1"
          },
          {
            "binary_name": "golang-github-go-git-go-git-dev",
            "binary_version": "5.14.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "golang-github-go-git-go-git",
        "purl": "pkg:deb/ubuntu/golang-github-go-git-go-git@5.14.0-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.14.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "go-git",
            "binary_version": "5.16.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "golang-github-go-git-go-git-dev",
            "binary_version": "5.16.2-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "golang-github-go-git-go-git",
        "purl": "pkg:deb/ubuntu/golang-github-go-git-go-git@5.16.2-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.14.0-1",
        "5.16.2-1",
        "5.16.2-1ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git\u2019s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.",
  "id": "UBUNTU-CVE-2026-33762",
  "modified": "2026-07-02T16:13:28Z",
  "published": "2026-03-31T15:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33762"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33762"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/releases/tag/v5.17.1"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/security/advisories/GHSA-gm2x-2g9h-ccm8"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33762"
  ]
}



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