CVE-2026-15565

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

• Advisories
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Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS