---
id: CVE-2026-109348
title: >-
  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
summary: >-
  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 en…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cwe:
  - CWE-407
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:31.673'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109348'
references:
  - url: >-
      https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmpw-wwcm-r8rc
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/gitoxide-gix-mailmap-before-0.35.0-cpu-denial-of-service-via-mailmap-parsing
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.210Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.