---
id: CVE-2026-53584
title: >-
  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
summary: >-
  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
  compon…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cwe:
  - CWE-22
published: '2026-08-20'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:19:49.197'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53584'
references:
  - url: >-
      https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1
    label: security-advisories@github.com
  - url: >-
      https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c
    label: security-advisories@github.com
  - url: >-
      https://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4
    label: security-advisories@github.com
  - url: 'https://github.com/libgit2/libgit2/releases/tag/v1.8.6'
    label: security-advisories@github.com
  - url: 'https://github.com/libgit2/libgit2/releases/tag/v1.9.5'
    label: security-advisories@github.com
  - url: 'https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.0041
epssPercentile: 0.32411
ingestedAt: '2026-09-09T21:22:45.545Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.