CVE-2026-33354

WWBN AVideo is an open source video platform. In versions up to and including 26.0, `POST /objects/aVideoEncoder.json.php` accepts a requester-controlled `chunkFile` parameter intended for staged upload chunks. Instead of restricting that path to trusted server-generated chunk locations, the endpoint accepts arbitrary local filesystem paths that pass `isValidURLOrPath()`. That helper allows files under broad server directories including `/var/www/`, the application root, cache, tmp, and `videos`, only rejecting `.php` files. For an authenticated uploader editing their own video, this becomes an arbitrary local file read. The endpoint copies the attacker-chosen local file into the attacker's public video storage path, after which it can be downloaded over HTTP. Commit 59bbd601a3f65a5b18c1d9e4eb11471c0a59214f contains a patch for the issue.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/WWBN/AVideo/commit/59bbd601a3f65a5b18c1d9e4eb11471c0a59214f	Patch
https://github.com/WWBN/AVideo/security/advisories/GHSA-4jw9-5hrc-m4j6	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-23 15:16

Updated : 2026-03-24 18:57

NVD link : CVE-2026-33354

Mitre link : CVE-2026-33354

CVE.ORG link : CVE-2026-33354

JSON object : View

Products Affected

wwbn

avideo

CWE

CWE-73

External Control of File Name or Path

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