CVE-2026-109351: Allocation of Resources Without Limits or Throttling in GitoxideLabs gix-pack
Description
Gitoxide gix-pack before 0.75.0 contains an uncontrolled memory allocation vulnerability that allows remote attackers to abort the process by supplying a huge pack-header object count. Malicious remotes can serve a 12-byte pack header claiming 0xFFFFFFFF objects, forcing Tree::with_capacity to reserve hundreds of gigabytes and crash clone or fetch operations.
CVSS v4.0
Score 7.1high
Affected software
GitoxideLabs
gix-pack
pkg:github/gitoxidelabs/gix-packRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109351 is an uncontrolled memory allocation vulnerability in GitoxideLabs gix-pack prior to version 0.75.0. A malicious remote can send a 12-byte pack header claiming 0xFFFFFFFF objects, causing the Tree::with_capacity function to allocate hundreds of gigabytes of memory. This leads to denial of service by crashing clone or fetch processes.
Potential Impact
The vulnerability allows remote attackers to cause denial of service by crashing the gix-pack process through excessive memory allocation. This disrupts normal clone and fetch operations, potentially impacting availability.
Mitigation Recommendations
Upgrade to gix-pack version 0.75.0 or later where this issue is fixed. Patch status is confirmed by the affectedVersions field indicating versions before 0.75.0 are vulnerable and the issue is resolved in 0.75.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-12T14:19:45.860Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acd0c162cdf04f656b11c0b
Added to database: 10/12/2026, 16:34:30 UTC
Last enriched: 10/12/2026, 16:49:05 UTC
Last updated: 10/12/2026, 21:46:39 UTC
Views: 11
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