Vulnerability Details CVE-2026-33647
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `ImageGallery::saveFile()` method validates uploaded file content using `finfo` MIME type detection but derives the saved filename extension from the user-supplied original filename without an allowlist check. An attacker can upload a polyglot file (valid JPEG magic bytes followed by PHP code) with a `.php` extension. The MIME check passes, but the file is saved as an executable `.php` file in a web-accessible directory, achieving Remote Code Execution. Commit 345a8d3ece0ad1e1b71a704c1579cbf885d8f3ae contains a patch.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 43.2%
CVSS Severity
CVSS v3 Score 8.8
Products affected by CVE-2026-33647
-
-
cpe:2.3:a:wwbn:avideo:10.1
-
cpe:2.3:a:wwbn:avideo:10.2
-
cpe:2.3:a:wwbn:avideo:10.4
-
cpe:2.3:a:wwbn:avideo:10.8
-
-
cpe:2.3:a:wwbn:avideo:11.1
-
cpe:2.3:a:wwbn:avideo:11.1.1
-
cpe:2.3:a:wwbn:avideo:11.5
-
cpe:2.3:a:wwbn:avideo:11.6
-
cpe:2.3:a:wwbn:avideo:12.4
-
cpe:2.3:a:wwbn:avideo:14.2
-
cpe:2.3:a:wwbn:avideo:14.3
-
cpe:2.3:a:wwbn:avideo:14.3.1
-
cpe:2.3:a:wwbn:avideo:14.4
-
cpe:2.3:a:wwbn:avideo:2.2
-
cpe:2.3:a:wwbn:avideo:2.4
-
cpe:2.3:a:wwbn:avideo:2.7
-
cpe:2.3:a:wwbn:avideo:3.4
-
cpe:2.3:a:wwbn:avideo:3.4.1
-
cpe:2.3:a:wwbn:avideo:4.0
-
cpe:2.3:a:wwbn:avideo:4.0.1
-
cpe:2.3:a:wwbn:avideo:4.0.2
-
cpe:2.3:a:wwbn:avideo:5.0
-
cpe:2.3:a:wwbn:avideo:6.5
-
cpe:2.3:a:wwbn:avideo:7.2
-
cpe:2.3:a:wwbn:avideo:7.3
-
cpe:2.3:a:wwbn:avideo:7.4
-
cpe:2.3:a:wwbn:avideo:7.5
-
cpe:2.3:a:wwbn:avideo:7.6
-
cpe:2.3:a:wwbn:avideo:7.7
-
cpe:2.3:a:wwbn:avideo:7.8
-
cpe:2.3:a:wwbn:avideo:8.1
-
cpe:2.3:a:wwbn:avideo:8.5
-
cpe:2.3:a:wwbn:avideo:8.6
-
cpe:2.3:a:wwbn:avideo:8.7
-
cpe:2.3:a:wwbn:avideo:8.9
-
cpe:2.3:a:wwbn:avideo:8.9.1