CVE-2026-73621GitPython before 3.1.56 Arbitrary File Truncation via Commit.count
Updated under an hour ago ()
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It affects gitpython-developers GitPython and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to 'git rev-list' without the check_unsafe_options guard present in the sibling iter_items method. An attacker who can control options passed to Commit.count (e.g., via an application that forwards a user-supplied options dict) can supply output=<path>, causing 'git rev-list --output=<path>' to open and truncate the target file to zero bytes before revision parsing. This allows destruction/blanking of an arbitrary file at the process's privilege level (no content control, 0-byte truncation).
- CVSS
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-88
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
gitpython-developers GitPython gitpython_developers:gitpython (from the name) | before 3.1.56; 3.1.56 not affected | CNA record |
gitpython_project gitpython gitpython_project:gitpython | before 3.1.56 | NVD |
References
- https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24vendor-advisory
- https://www.vulncheck.com/advisories/gitpython-before-arbitrary-file-truncation-via-commit-countthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.