All vulnerabilities
CVE-2026-109348GHSA-pmpw-wwcm-r8rc

Gitoxide gix-mailmap before 0.35.0 CPU Denial of Service via .mailmap Parsing

GitoxideLabs gix-mailmap
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 13 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.35.0Fixed versionCVE List
Published12 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Gitoxide gix-mailmap before 0.35.0 contains a denial of service vulnerability that allows attackers to exhaust CPU through quadratic-time parsing in Snapshot::from_bytes. Attackers can commit a crafted .mailmap with descending-ordered entries forcing repeated front inserts, blocking workers running log, blame, or shortlog for minutes.

Text from CVE List

Affected versions 2

  • gix-mailmapaffected: all versions before 0.35.0CVE List
  • gix-mailmapunaffected: 0.35.0CVE List

References 2