CVE-2026-15565
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.
- CVSS 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-25)
- CWE
- CWE-120
- Published
- Modified
- Record from
- the NVD, synced