CVE-2026-10650
6.9
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| warmcat | libwebsockets | 4.5.0 | affected |
| warmcat | libwebsockets | 4.5.1 | affected |
| warmcat | libwebsockets | 4.5.2 | affected |
| warmcat | libwebsockets | 4.5.3 | affected |
| warmcat | libwebsockets | 4.5.4 | affected |
| warmcat | libwebsockets | 4.5.5 | affected |
| warmcat | libwebsockets | 4.5.6 | affected |
| warmcat | libwebsockets | 4.5.7 | affected |
| warmcat | libwebsockets | 4.5.8 | affected |
Weaknesses
- CWE-400: Resource Consumption
- CWE-404: Denial of Service
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
References
- https://vuldb.com/vuln/367955
- https://vuldb.com/vuln/367955/cti
- https://vuldb.com/cve/CVE-2026-10650
- https://vuldb.com/submit/830261
- https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc
- https://github.com/biniamf/pocs/blob/main/libwebsockets_sshd-parse-ic-unbounded-alloc/poc_sshd_unbounded_alloc.py
- https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498
- https://github.com/warmcat/libwebsockets/
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