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High · 8.8 CVE-2026-33717 EUVD-2026-14504GHSA-8wf4-c4x3-h952

AVideo Vulnerable to Remote Code Execution via Persistent PHP Temp File in Encoder downloadURL with Resolution Validation Abort

Published Mar 23, 2026 · Updated Mar 24, 2026 · Assigned by GitHub_M

Description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `downloadVideoFromDownloadURL()` function in `objects/aVideoEncoder.json.php` saves remote content to a web-accessible temporary directory using the original URL's filename and extension (including `.php`). By providing an invalid `resolution` parameter, an attacker triggers an early `die()` via `forbiddenPage()` before the temp file can be moved or cleaned up, leaving an executable PHP file persistently accessible under the web root at `videos/cache/tmpFile/`. Commit 6da79b43484099a0b660d1544a63c07b633ed3a2 contains a patch.

Affected products

VendorProductAffectedFixed
WWBN AVideo <= 26.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist wwbn/avideo <= 26.0 — GHSA-8wf4-c4x3-h952

References