GitoxideLabs gix-mailmap up to 0.34.x Mailmap Parsing Snapshot::from_bytes denial of service

Summaryinfo

A vulnerability was found in GitoxideLabs gix-mailmap up to 0.34.x and classified as problematic. This vulnerability affects the function Snapshot::from_bytes of the component Mailmap Parsing. Such manipulation leads to denial of service. This vulnerability is traded as CVE-2026-109348. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in GitoxideLabs gix-mailmap up to 0.34.x. Affected by this issue is the function Snapshot::from_bytes of the component Mailmap Parsing. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-109348 since 10/12/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 0.35.0 eliminates this vulnerability.

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Productinfo

Vendor

• GitoxideLabs

Name

• gix-mailmap

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34

CPE 2.3info

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• 🔒
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CPE 2.2info

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