CVE-2026-53584

medium

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.

References

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

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

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

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

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

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

Details

Source: Mitre, NVD

Published: 2026-08-20

Updated: 2026-08-20

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

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

Severity: Medium

EPSS

EPSS: 0.00404