CVE-2026-76219

Summary

GitPython versions before 3.1.58 contain an arbitrary file overwrite vulnerability in IndexFile.from_tree, IndexFile.reset, and IndexFile.merge_tree methods that append caller-influenced treeish strings to git read-tree without option validation or argument separation. Attackers can inject the –index-output option to overwrite arbitrary files with a valid git-index blob, destroying existing file content at attacker-controlled writable paths.

Affected Software

Weaknesses

• CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

References

• https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-4gmw-gg2m-w46p
• https://www.vulncheck.com/advisories/gitpython-before-arbitrary-file-overwrite-via-read-tree

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