CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
3Description
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the site customization endpoint at admin/customize_settings_nativeUpdate.json.php lacks CSRF token validation and writes uploaded logo files to disk before the ORM's domain-based security check executes. Combined with SameSite=None cookie policy, a cross-origin POST can overwrite the platform's logo with attacker-controlled content.
Analysis
Cross-site request forgery in WWBN AVideo 26.0 and earlier allows unauthenticated remote attackers to overwrite the platform's logo file via a malicious cross-origin POST to the admin/customize_settings_nativeUpdate.json.php endpoint. The vulnerability exploits missing CSRF token validation combined with a SameSite=None cookie policy and a file-write-before-validation logic flaw, enabling integrity compromise of the site's branding. …
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External POC / Exploit Code
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EUVD-2026-19454