CVE-2026-34165

Name	CVE-2026-34165
Description	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, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it order to create or alter existing .idx files. This issue has been patched in version 5.17.1.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1132584

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-github-go-git-go-git (PTS)	bookworm	5.4.2-3	vulnerable
	trixie	5.14.0-1	vulnerable
	forky, sid	5.17.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-github-go-git-go-git	source	(unstable)	5.17.1-1			1132584

Notes

[trixie] - golang-github-go-git-go-git <no-dsa> (Minor issue)
[bookworm] - golang-github-go-git-go-git <no-dsa> (Minor issue)
https://github.com/go-git/go-git/security/advisories/GHSA-jhf3-xxhw-2wpp