CVE-2026-44961: Revive Adserver

None severity, CVSS 0.0. EPSS: 0.4% chance of exploitation in the next 30 days.

The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.

Affected products

• Revive Adserver: up to and including 6.0.6

Published 2026-06-23. Last modified 2026-06-25.