Medium severity · published Oct 12, 2026
CVE-2026-109349
gix-pack before 0.75.0 Reachable Assertion DoS via Pack Version 3 Header
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
gitoxide gix-pack before 0.75.0 contains a reachable assertion in BytesToEntriesIter::new_from_header: the pack header decoder accepts version 3, but a release-enabled assert_eq! requires version 2. A malicious remote can send a 12-byte pack header declaring version 3 to panic the client and abort the clone or fetch.
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 19% 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-2026-109349
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109349
vendor-advisory
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-633h-mqjc-8rwg
third-party-advisory
https://www.vulncheck.com/advisories/gix-pack-before-0.75.0-reachable-assertion-dos-via-pack-version-3-header
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