ubuntu-cve-2026-71556
Vulnerability from osv_ubuntu
Published
2026-08-07 17:17
Modified
2026-08-13 00:14
Summary
Details

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, worktree operations (including checkout, status, and add) resolve symbolic links inside the working tree without confining resolution to the worktree boundary, so a maliciously crafted repository containing a symlink can cause go-git to read from or write to files outside the intended working directory when the repository is cloned and its worktree operations are used. Versions 5.19.2 and 6.0.0-alpha.5.

Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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": "5.16.2-1ubuntu0.1~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 5.19.2 and 6.0.0-alpha.5, worktree operations (including checkout, status, and add) resolve symbolic links inside the working tree without confining resolution to the worktree boundary, so a maliciously crafted repository containing a symlink can cause go-git to read from or write to files outside the intended working directory when the repository is cloned and its worktree operations are used. Versions 5.19.2 and 6.0.0-alpha.5.",
  "id": "UBUNTU-CVE-2026-71556",
  "modified": "2026-08-13T00:14:08Z",
  "published": "2026-08-07T17:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-71556"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-71556"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/commit/008a78f2dd86f52544ddff8b8e8ddeecdf3f7aab"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/commit/661d1c7f101d34e002a3cfcf8dbea5b7421d07ac"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/releases/tag/v5.19.2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/go-git/go-git/security/advisories/GHSA-hc8v-wwc9-vgxm"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-71556"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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