CVE-2026-10650

MediumCVSS 5.3

Published: 02/06/2026(UTC)Updated: 22/07/2026(UTC)Translated: 25/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.43%

35th percentile - higher than 35% of all known CVEs

Summary

A flaw has been found in warmcat libwebsockets up to version 4.5.8. The issue affects the function lws_ssh_parse_plaintext in the file plugins/protocol_lws_ssh_base/sshd.c. Manipulation of the msg_len argument can lead to resource consumption. The attack can be launched remotely and the exploit is publicly available.

Risk Assessment

The organization is at risk of a denial of service (DoS) attack via remote resource exhaustion, potentially disrupting services that rely on libwebsockets.

Recommendation

Apply the patch identified as 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498 or update the library to a fixed version immediately.

Other vulnerabilities in libwebsockets

CVE-2026-78161High
A vulnerability was found in libwebsockets 4.5.0 in the report_raw_cbor function of lib/misc/lecp.c in the LECP CBOR Recording component. Manipulation leads to an out-of-bounds write. The attack can be launched remotely, and the exploit is public.

Original NVD description (English source)

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.