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.
References6
- github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480e…
- github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf…
- github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b…
- github.com/libgit2/libgit2/releases/tag/v1.8.6
- github.com/libgit2/libgit2/releases/tag/v1.9.5
- github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-m…
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 26 · as of 10 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.