CVE-2026-109351

Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Count

State: Published
Severity: 7.1 High
Published: Oct 12, 2026
Updated: Oct 26, 2026
Reserved: Oct 12, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	VulnCheck

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
gix-packGitoxideLabs	before 0.75.0Affected 0.75.0Not affected

References

GitHub Security Advisory (GHSA-x862-c2wj-4mwr)vendor-advisory
VulnCheck Advisory: Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Countthird-party-advisory

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