Integer overflow in Go-git
CVE-2026-34165
go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, poten…
EPSS: 0.000 (0.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Go-git — versions >= 5.0.0, < 5.17.1
Weakness classification (CWE)
References
- https://github.com/go-git/go-git/security/advisories/GHSA-jhf3-xxhw-2wpp (x_refsource_CONFIRM)
- https://github.com/go-git/go-git/releases/tag/v5.17.1 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-34165?
- CVE-2026-34165 is a medium-severity vulnerability in Go-git, classified under Integer Underflow. CVSS score: 5.0/10. Published 2026-03-31.
- How severe is CVE-2026-34165?
- Medium severity. CVSS v3 base score is 5.0 out of 10.