Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.4%
CVSS Severity
CVSS v3 Score 7.6
Products affected by CVE-2026-33354
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cpe:2.3:a:wwbn:avideo:10.1
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cpe:2.3:a:wwbn:avideo:10.2
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cpe:2.3:a:wwbn:avideo:10.4
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cpe:2.3:a:wwbn:avideo:10.8
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cpe:2.3:a:wwbn:avideo:11.1
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cpe:2.3:a:wwbn:avideo:11.1.1
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cpe:2.3:a:wwbn:avideo:11.5
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cpe:2.3:a:wwbn:avideo:11.6
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cpe:2.3:a:wwbn:avideo:12.4
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cpe:2.3:a:wwbn:avideo:14.2
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cpe:2.3:a:wwbn:avideo:14.3
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cpe:2.3:a:wwbn:avideo:14.3.1
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cpe:2.3:a:wwbn:avideo:14.4
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cpe:2.3:a:wwbn:avideo:2.2
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cpe:2.3:a:wwbn:avideo:2.4
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cpe:2.3:a:wwbn:avideo:2.7
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cpe:2.3:a:wwbn:avideo:3.4
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cpe:2.3:a:wwbn:avideo:3.4.1
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cpe:2.3:a:wwbn:avideo:4.0
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cpe:2.3:a:wwbn:avideo:4.0.1
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cpe:2.3:a:wwbn:avideo:4.0.2
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cpe:2.3:a:wwbn:avideo:5.0
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cpe:2.3:a:wwbn:avideo:6.5
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cpe:2.3:a:wwbn:avideo:7.2
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cpe:2.3:a:wwbn:avideo:7.3
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cpe:2.3:a:wwbn:avideo:7.4
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cpe:2.3:a:wwbn:avideo:7.5
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cpe:2.3:a:wwbn:avideo:7.6
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cpe:2.3:a:wwbn:avideo:7.7
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cpe:2.3:a:wwbn:avideo:7.8
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cpe:2.3:a:wwbn:avideo:8.1
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cpe:2.3:a:wwbn:avideo:8.5
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cpe:2.3:a:wwbn:avideo:8.6
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cpe:2.3:a:wwbn:avideo:8.7
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cpe:2.3:a:wwbn:avideo:8.9
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cpe:2.3:a:wwbn:avideo:8.9.1