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.

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Vendors Products
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-vv7w-qf5c-734w AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 24 Mar 2026 18:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*

Tue, 24 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 24 Mar 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Wwbn
Wwbn avideo
Vendors & Products Wwbn
Wwbn avideo

Mon, 23 Mar 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-24T17:42:00.272Z

Reserved: 2026-03-20T16:16:48.970Z

Link: CVE-2026-33483

cve-icon Vulnrichment

Updated: 2026-03-24T17:41:50.891Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-23T15:16:34.717

Modified: 2026-03-24T18:36:55.063

Link: CVE-2026-33483

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-24T10:33:45Z

Weaknesses