Medium severity · published Oct 12, 2026
CVE-2026-109348
Gitoxide gix-mailmap before 0.35.0 CPU Denial of Service via .mailmap Parsing
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
gix-mailmap · GitoxideLabs
before 0.35.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109348
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109348
vendor-advisory
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmpw-wwcm-r8rc
third-party-advisory
https://www.vulncheck.com/advisories/gitoxide-gix-mailmap-before-0.35.0-cpu-denial-of-service-via-mailmap-parsing