CVE-2026-53584

Published: Aug 20, 2026Modified: Sep 9, 2026

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploitability: 2.8 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (6)

https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1

Source: security-advisories@github.com

https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c

Source: security-advisories@github.com

https://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4

Source: security-advisories@github.com

https://github.com/libgit2/libgit2/releases/tag/v1.8.6

Source: security-advisories@github.com

https://github.com/libgit2/libgit2/releases/tag/v1.9.5

Source: security-advisories@github.com

https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm

Source: security-advisories@github.com

Timeline

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