What’s Vulnerable › Vulnerabilities

CVE-2026-109351: Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Count

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-26
• Weakness: CWE-770

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.

Affected products

• GitoxideLabs gix-pack: before 0.75.0 — fixed in 0.75.0

How to fix

Upgrade to a fixed version: GitoxideLabs gix-pack 0.75.0. Check the vendor advisory for mitigations.

References

• https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-x862-c2wj-4mwr
• https://www.vulncheck.com/advisories/gitoxide-gix-pack-before-0.75.0-denial-of-service-via-pack-header-object-count

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