CVE-2026-109349

6.5Medium

Published 12 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash

6.5Medium

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Impact: High impact on availability
Weakness: CWE-617

Impact

A malicious remote repository can crash the git client and abort clone or fetch operations. An attacker needs a user to attempt a clone or fetch from their untrusted server.

Root cause

The pack header decoder allows version 3, but an active assert_eq! macro enforces version 2, causing an unhandled panic on unexpected header versions.

Affected systems

gitoxide gix-pack before 0.75.0

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Fix & remediation

Upgrade gix-pack to version 0.75.0 or later. If upgrading is delayed, avoid fetching from or cloning untrusted remote repositories.

shell

$ cargo update -p gix-pack --precise 0.75.0

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD 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.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109349