CVE-2026-10650

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-10650
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10650.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-10650
Downstream
Published
2026-06-02T21:15:10.566Z
Modified
2026-07-11T11:30:07.120245Z
Severity
  • 5.5 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption
Details

A flaw has been found in warmcat libwebsockets up to 4.5.8. This issue affects the function lwssshparseplaintext of the file plugins/protocollwssshbase/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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10650.json",
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-400",
        "CWE-404"
    ]
}
References

Affected packages

Git / github.com/warmcat/libwebsockets

Affected ranges

Type
GIT
Repo
https://github.com/warmcat/libwebsockets
Events
Introduced
1baa35eb9b821bc11aee5b55f7b1fa7893b97206
Fixed
3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "4.5.0"
        },
        {
            "last_affected": "4.5.0"
        },
        {
            "introduced": "4.5.1"
        },
        {
            "last_affected": "4.5.1"
        },
        {
            "introduced": "4.5.2"
        },
        {
            "last_affected": "4.5.2"
        },
        {
            "introduced": "4.5.3"
        },
        {
            "last_affected": "4.5.3"
        },
        {
            "introduced": "4.5.4"
        },
        {
            "last_affected": "4.5.4"
        },
        {
            "introduced": "4.5.5"
        },
        {
            "last_affected": "4.5.5"
        },
        {
            "introduced": "4.5.6"
        },
        {
            "last_affected": "4.5.6"
        },
        {
            "introduced": "4.5.7"
        },
        {
            "last_affected": "4.5.7"
        },
        {
            "introduced": "4.5.8"
        },
        {
            "last_affected": "4.5.8"
        }
    ]
}

Affected versions

4.*
4.5.0
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
v4.*
v4.5.0

Database specific

vanir_signatures_modified 
"2026-07-11T11:30:07Z"
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10650.json"
vanir_signatures 
[
    {
        "id": "CVE-2026-10650-a2caac16",
        "digest": {
            "function_hash": "223292177264018152059127170552997840095",
            "length": 27418.0
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498",
        "deprecated": false,
        "target": {
            "function": "lws_ssh_parse_plaintext",
            "file": "plugins/protocol_lws_ssh_base/sshd.c"
        }
    },
    {
        "id": "CVE-2026-10650-d0d097ae",
        "digest": {
            "line_hashes": [
                "230678263889119124725097030606287726140",
                "253115424038956764347284674786634550864",
                "219538588783176850529199827532462434281",
                "151271795857011214005243946654717671970",
                "280402347491021519581610281068362005936",
                "267209107435260958037624221369273994216",
                "126377755075777418181124210623804731806",
                "91733143886165763931680506950659605153"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498",
        "deprecated": false,
        "target": {
            "file": "plugins/protocol_lws_ssh_base/sshd.c"
        }
    }
]