Remote Code Execution Vulnerability in WWBN AVideo Open Source Video Platform
CVE-2026-33483

7.5HIGH

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
23 March 2026

What is CVE-2026-33483?

The WWBN AVideo platform, an open-source video hosting solution, contains a security flaw in the aVideoEncoderChunk.json.php endpoint. Versions up to 26.0 are affected due to a lack of authentication and resource limits within this standalone PHP script, which allows unauthenticated remote attackers to send arbitrary POST requests. This can lead to unauthorized data being written to persistent temporary files located in /tmp/, potentially exhausting server disk space and causing a denial of service. A patch has been released to address this issue.

Affected Version(s)

AVideo <= 26.0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-v...
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https://github.com/WWBN/AVideo/commit/33d1bae6c731ef1682f...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.