| Name | CVE-2026-10650 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1139178 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libwebsockets (PTS) | bullseye | 4.0.20-2 | vulnerable |
| bullseye (security) | 4.0.20-2+deb11u1 | vulnerable |
| bookworm | 4.1.6-3 | vulnerable |
| trixie | 4.3.5-1+deb13u1 | vulnerable |
| forky, sid | 4.3.5-5 | fixed |
The information below is based on the following data on fixed versions.
Notes
[trixie] - libwebsockets <no-dsa> (Minor issue)
[bookworm] - libwebsockets <no-dsa> (Minor issue)
[bullseye] - libwebsockets <postponed> (Minor issue)
https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc
https://libwebsockets.org/git/libwebsockets/commit?id=3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498