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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.

PUBLISHED Reserved 2026-03-23 | Published 2026-03-23 | Updated 2026-03-24 | Assigner GitHub_M




HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-434: Unrestricted Upload of File with Dangerous Type

Product status

<= 26.0
affected

References

github.com/...AVideo/security/advisories/GHSA-8wf4-c4x3-h952

github.com/...ommit/6da79b43484099a0b660d1544a63c07b633ed3a2

cve.org (CVE-2026-33717)

nvd.nist.gov (CVE-2026-33717)

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