Vulnerability in Gitpython-Developers Gitpython
CVE-2026-76219
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/gitpython-developers/GitPython/security/advisories/GHSA-4gmw-gg2m-w4… (Exploit, vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/gitpython-before-arbitrary-file-overwrite-via-read… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-76219?
- CVE-2026-76219 is a high-severity vulnerability in Gitpython-Developers Gitpython, classified under Argument Injection. CVSS score: 8.1/10. Published 2026-08-19.
- How severe is CVE-2026-76219?
- High severity. CVSS v3 base score is 8.1 out of 10.