PT-2026-45865 · Warmcat · Libwebsockets

Biniam · CVE-2026-10650 · Published 2026-06-02 · Updated 2026-06-12

Positive Technologies (AI Summary)

CVSS v4.0

5.5

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Name of the Vulnerable Software and Affected Versions warmcat libwebsockets versions prior to 4.5.9

Description A flaw in the SSH Protocol Handler component allows for remote resource consumption. The issue exists within the lws ssh parse plaintext() function located in the plugins/protocol lws ssh base/sshd.c file. An attacker can trigger this by manipulating the msg len argument.

Recommendations Apply patch 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498 to remediate the issue.

Exploit

Fix

Improper Resource Release

Resource Exhaustion

Weakness Enumeration

CWE-404

CWE-400

Related Identifiers

CVE-2026-10650

OESA-2026-2668

Affected Products

Libwebsockets

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10650.json · Exploit
• 🔥 https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc · Exploit
• 🔥 https://github.com/biniamf/pocs/blob/main/libwebsockets_sshd-parse-ic-unbounded-alloc/poc_sshd_unbounded_alloc.py · Exploit
• https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498 · Patch
• https://osv.dev/vulnerability/OESA-2026-2668 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-10650 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-10650 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-10650 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-10650 · Security Note
• https://ubuntu.com/security/CVE-2026-10650 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-10650 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-10650 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-10650 · Vendor Advisory
• https://vuldb.com/vuln/367955/cti · Note
• https://github.com/warmcat/libwebsockets · Note