Detections
Analytics
CVE-2026-15565
high
Description
A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket handshake.
References
https://bugzilla.redhat.com/show_bug.cgi?id=2490628