CVE-2026-33483: high-severity vulnerability in WWBN AVideo
AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.6%
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `aVideoEncoderChunk.json.php` endpoint is a completely standalone PHP script with no authentication, no framework includes, and no resource limits. An unauthenticated remote attacker can send arbitrary POST data which is written to persistent temp files in `/tmp/` with no size cap, no rate limiting, and no cleanup mechanism. This allows trivial disk space exhaustion leading to denial of service of the entire server. Commit 33d1bae6c731ef1682fcdc47b428313be073a5d1 contains a patch.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
WWBN · AVideoRelated CVEs — WWBN AVideo
In the same product, most dangerous first.
CVE-2022-30690CRITICALCVE-2022-30690EPSS 83.9%CVE-2022-30534CRITICALCVE-2022-30534EPSS 75.0%CVE-2022-30547CRITICALCVE-2022-30547EPSS 63.7%CVE-2022-32572CRITICALCVE-2022-32572EPSS 24.1%CVE-2026-33478CRITICALAVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command InjectionEPSS 13.3%CVE-2023-32073HIGHAVideo command injection vulnerabilityEPSS 6.5%