Use After Free in Warmcat Libwebsockets
CVE-2025-11677
Use After Free in WebSocket server implementation in lws_handshake_server in warmcat libwebsockets may allow an attacker, in specific configurations where the user provides a callback function that handles LWS_CALLBACK_HTTP_CONFIRM_UPGRADE…
Vulnerability class: Use-After-Free
EPSS: 0.004 (29.8th percentile) — read the EPSS interpretation.
Affected products
- Warmcat Libwebsockets — versions 3
Weakness classification (CWE)
References
- prodsec@nozominetworks.com (vendor-advisory, patch)
- prodsec@nozominetworks.com (third-party-advisory)