# CVE-2026-87817

## Summary

- **CVE ID:** CVE-2026-87817
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-94
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 10, 2026

## Description

GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malicious pre-commit hook in the tracked hooks directory that executes when a victim calls index.commit() on a cloned or opened repository.

## Affected Products

- gitpython-developers — GitPython (0)
- gitpython-developers — GitPython (3.1.60)

## References

- [CNA](https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-239g-whfq-7xj9)
- [CNA](https://www.vulncheck.com/advisories/gitpython-before-3.1.60-remote-code-execution-via-git-directory-impersonation)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.31%
- **EPSS Percentile:** 23.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._