Medium severity · published Oct 12, 2026
CVE-2026-109351
Gitoxide gix-pack before 0.75.0 Denial of Service via Pack Header Object Count
6.5
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
gix-pack · GitoxideLabs
before 0.75.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109351
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109351
vendor-advisory
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-x862-c2wj-4mwr
third-party-advisory
https://www.vulncheck.com/advisories/gitoxide-gix-pack-before-0.75.0-denial-of-service-via-pack-header-object-count
More from gix-pack
6.5
CVE-2026-109350
Gitoxide gix-pack before 0.75.0 Denial of Service via OFS_DELTA Base Distance
6.5
CVE-2026-109349
gix-pack before 0.75.0 Reachable Assertion DoS via Pack Version 3 Header