CVE-2026-120458
mediumKvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by suppl…
Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-11-02 15:17
Modified: 2026-11-02 19:35
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-11-03 07:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/ultravideo/kvazaar/blob/v2.3.2/src/encmain.c#L339-L357 disclosure@vulncheck.com
- https://github.com/ultravideo/kvazaar/commit/8a2f109be283e87008c679d635966cc034da39c6 disclosure@vulncheck.com
- https://github.com/ultravideo/kvazaar/issues/452 disclosure@vulncheck.com
- https://github.com/ultravideo/kvazaar/releases/tag/v2.3.2 disclosure@vulncheck.com
- https://hackmd.io/@haindpwn/kvazaar-y4m-header-missing-newline-infinite-loop disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/kvazaar-through-2.3.2-infinite-loop-dos-via-y4m-heade... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:35 UTC · record ↗