CVE-2026-34611
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
WWBN AVideo version 26.0 and prior allows admins to send HTML emails to all users via the objects/emailAllUsers.json.php endpoint. No CSRF token validation and SameSite=None on session cookies enable cross-origin CSRF attacks.
Risk Assessment
An attacker can trick an admin into visiting a malicious page, sending arbitrary HTML emails to all users, impersonating the legitimate SMTP address.
Recommendation
Apply temporary mitigations like adding CSRF token validation to the endpoint. Monitor for official patches and update immediately when available.
Original NVD description (English source)
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the AVideo endpoint objects/emailAllUsers.json.php allows administrators to send HTML emails to every registered user on the platform. While the endpoint verifies admin session status, it does not validate a CSRF token. Because AVideo sets SameSite=None on session cookies, a cross-origin POST request from an attacker-controlled page will include the admin's session cookie automatically. An attacker who lures an admin to a malicious page can send an arbitrary HTML email to every user on the platform, appearing to originate from the instance's legitimate SMTP address. At time of publication, there are no publicly available patches.