CVE-2026-10650: Warmcat Libwebsockets

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw has been found in warmcat libwebsockets up to 4.5.8. This issue affects the function lws_ssh_parse_plaintext of the file plugins/protocol_lws_ssh_base/sshd.c of the component SSH Protocol Handler. Executing a manipulation of the argument msg_len can lead to resource consumption. The attack may be launched remotely. The exploit has been published and may be used. This patch is called 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498. A patch should be applied to remediate this issue.

Affected products

• Warmcat Libwebsockets: version 4.5.0 only; version 4.5.1 only; version 4.5.2 only; version 4.5.3 only; version 4.5.4 only; version 4.5.5 only; …

Published 2026-06-02. Last modified 2026-07-22.