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Description

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.

PUBLISHED Reserved 2026-03-20 | Published 2026-03-23 | Updated 2026-03-24 | Assigner GitHub_M




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

<= 26.0
affected

References

github.com/...AVideo/security/advisories/GHSA-vv7w-qf5c-734w

github.com/...ommit/33d1bae6c731ef1682fcdc47b428313be073a5d1

cve.org (CVE-2026-33483)

nvd.nist.gov (CVE-2026-33483)

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