Bug 2541824 (CVE-2026-100689) - CVE-2026-100689 GitPython: GitPython: Directory traversal via untrusted submodule path
Summary: CVE-2026-100689 GitPython: GitPython: Directory traversal via untrusted submo...
Keywords:
Status: NEW
Alias: CVE-2026-100689
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-26 13:32 UTC by OSIDB Bzimport
Modified: 2026-09-26 13:44 UTC (History)
47 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-26 13:32:48 UTC
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.


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