AVideo < 20.0 ImageGallery Plugin Unauthenticated File Upload and Deletion

Advisories

severity: critical
date: December 17, 2025
Affecting: AVideo < 20.0
CVE: CVE-2025-34434
CWE: CWE-306 Missing Authentication for Critical Function
CVSS: 9.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: AVideo Release Notes
AVideo Patch Commit
Credit: Valentin Lobstein (Chocapikk)
Description: AVideo versions prior to 20.0 with the ImageGallery plugin enabled is vulnerable to unauthenticated file upload and deletion. Plugin endpoints responsible for managing gallery images fail to enforce authentication checks and do not validate ownership, allowing unauthenticated attackers to upload or delete images associated with any image-based video.