CVE-2026-10650
MEDIUMwarmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption
Title source: cnaDescription
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.
References (8)
Core 8
Core References
Product product
https://github.com/warmcat/libwebsockets/
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-367955 | warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption
https://vuldb.com/vuln/367955
Signature, Permissions Required signature
permissions-required
VDB-367955 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/367955/cti
Third Party Advisory third-party-advisory
CVE-2026-10650 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-10650
Third Party Advisory third-party-advisory
Submit #830261 | warmcat libwebsockets 4.5.99-v4.5.0-382-g4a63b9333 Uncontrolled Memory Allocation
https://vuldb.com/submit/830261
Exploit exploit
https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc
Scores
CVSS v3
5.3
EPSS
0.0043
EPSS Percentile
34.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
CWE-404
Status
published
Products (9)
warmcat/libwebsockets
4.5.0
warmcat/libwebsockets
4.5.1
warmcat/libwebsockets
4.5.2
warmcat/libwebsockets
4.5.3
warmcat/libwebsockets
4.5.4
warmcat/libwebsockets
4.5.5
warmcat/libwebsockets
4.5.6
warmcat/libwebsockets
4.5.7
warmcat/libwebsockets
4.5.8
Published
Jun 02, 2026
Tracked Since
Jun 03, 2026