CVE-2026-10650CWE-400CWE-404

warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption

Medium · published June 2, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
36.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00429 · 36.1th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-404 · Improper Resource Shutdown or Release
Published
2026-06-02T21:15Z
EPSS history
Timeline
  • 02 JUN 21:15Z
    warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption
    cvelistv5