{"id":"CVE-2026-100689","published":"2026-09-26T14:16:53.420","lastModified":"2026-09-29T21:35:07.960","description":"GitPython before 3.1.62 does not validate the `path` field read from an untrusted .gitmodules file when updating submodules. While a prior fix (GHSA-hmq2-w58f-27jc) added Submodule._validated_name() to constrain the `name` field, and GitPython's own containment guard Submodule._to_relative_path() is applied in add() and move(), Submodule.update() derives the absolute checkout location from the raw `path` value without that guard. A .gitmodules entry containing directory traversal components (e.g., path = ../../../tmp/escaped) can therefore cause directories to be created via os.makedirs() outside the repository working tree, populated from the submodule URL on the clone path, and removed via shutil.rmtree() when force_remove is used. Exploitation requires an application flow that updates submodules at a non-HEAD commit (such as a historical-commit API); the common clone-then-update flow re-derives the path from a canonical tree lookup and is not affected. The issue is fixed in GitPython 3.1.62.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L","cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-59cr-6r3x-644w","tags":[]},{"url":"https://www.vulncheck.com/advisories/gitpython-before-3.1.62-path-traversal-via-gitmodules-path","tags":[]}],"exploitRefs":[{"url":"https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-59cr-6r3x-644w","tags":[]}],"hasPoc":true,"ai":null}