Vulnerability-Lookup

CVE-2026-10650 (GCVE-0-2026-10650)

Vulnerability from cvelistv5 – Published: 2026-06-02 21:15 – Updated: 2026-06-03 14:04 X_Open Source

Title

warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption

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.

Severity

6.9 (Medium)


                        
                          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

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-03 14:04 UTC

CWE

CWE-400 - Resource Consumption
CWE-404 - Denial of Service

Assigner

VulDB mitre root

References

8 references

URL	Tags
https://vuldb.com/vuln/367955	vdb-entrytechnical-description
https://vuldb.com/vuln/367955/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10650	third-party-advisory
https://vuldb.com/submit/830261	third-party-advisory
https://github.com/biniamf/pocs/tree/main/libwebs…	exploit
https://github.com/biniamf/pocs/blob/main/libwebs…	exploit
https://github.com/warmcat/libwebsockets/commit/3…	patch
https://github.com/warmcat/libwebsockets/	product

Impacted products

1 product

Vendor	Product	Version	CPE status
warmcat	libwebsockets	Affected: 4.5.0 Affected: 4.5.1 Affected: 4.5.2 Affected: 4.5.3 Affected: 4.5.4 Affected: 4.5.5 Affected: 4.5.6 Affected: 4.5.7 Affected: 4.5.8 cpe:2.3:a:warmcat:libwebsockets::::::::

Credits

biniam (VulDB User)

Show details on NVD website

JSON

To clipboard

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                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
                "version": "3.1"
              }
            },
            {
              "cvssV3_0": {
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
                "version": "3.0"
              }
            },
            {
              "cvssV2_0": {
                "baseScore": 5,
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
                "version": "2.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-400",
                  "description": "Resource Consumption",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-404",
                  "description": "Denial of Service",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-02T21:15:10.566Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-367955 | warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/vuln/367955"
            },
            {
              "name": "VDB-367955 | CTI Indicators (IOB, IOC, TTP, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/vuln/367955/cti"
            },
            {
              "name": "CVE-2026-10650 | CVE Analysis and Report",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/cve/CVE-2026-10650"
            },
            {
              "name": "Submit #830261 | warmcat libwebsockets 4.5.99-v4.5.0-382-g4a63b9333 Uncontrolled Memory Allocation",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/submit/830261"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/biniamf/pocs/blob/main/libwebsockets_sshd-parse-ic-unbounded-alloc/poc_sshd_unbounded_alloc.py"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://github.com/warmcat/libwebsockets/"
            }
          ],
          "tags": [
            "x_open-source"
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-06-02T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2026-06-02T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2026-06-02T17:24:23.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2026-10650",
        "datePublished": "2026-06-02T21:15:10.566Z",
        "dateReserved": "2026-06-02T15:19:20.070Z",
        "dateUpdated": "2026-06-03T14:04:31.919Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

BELL-CVE-2026-10650 (CVE-2026-10650)

Vulnerability from osv_bellsoft – Published: 2026-06-05 06:11 – Updated: 2026-06-19 11:19 – Source website

Withdrawn 2026-06-19

Summary

CVE-2026-10650 does not affect BellSoft software

Severity

5.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

URL

Type

https://docs.bell-sw.com/security/cves/CVE-2026-10650

ADVISORY

JSON

To clipboard

{
  "id": "BELL-CVE-2026-10650",
  "modified": "2026-06-19T11:19:51.773666Z",
  "published": "2026-06-05T06:11:25.870225Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://docs.bell-sw.com/security/cves/CVE-2026-10650"
    }
  ],
  "schema_version": "1.7.4",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CVE-2026-10650 does not affect BellSoft software",
  "upstream": [
    "CVE-2026-10650"
  ],
  "withdrawn": "2026-06-19T11:19:51.773666Z"
}

FKIE_CVE-2026-10650

Vulnerability from fkie_nvd - Published: 2026-06-02 22:16 - Updated: 2026-07-22 19:10

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/biniamf/pocs/blob/main/libwebsockets_sshd-parse-ic-unbounded-alloc/poc_sshd_unbounded_alloc.py
	cna@vuldb.com	https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc
	cna@vuldb.com	https://github.com/warmcat/libwebsockets/
	cna@vuldb.com	https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-10650
	cna@vuldb.com	https://vuldb.com/submit/830261
	cna@vuldb.com	https://vuldb.com/vuln/367955
	cna@vuldb.com	https://vuldb.com/vuln/367955/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:warmcat:libwebsockets:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "SSH Protocol Handler"
          ],
          "product": "libwebsockets",
          "vendor": "warmcat",
          "versions": [
            {
              "status": "affected",
              "version": "4.5.0"
            },
            {
              "status": "affected",
              "version": "4.5.1"
            },
            {
              "status": "affected",
              "version": "4.5.2"
            },
            {
              "status": "affected",
              "version": "4.5.3"
            },
            {
              "status": "affected",
              "version": "4.5.4"
            },
            {
              "status": "affected",
              "version": "4.5.5"
            },
            {
              "status": "affected",
              "version": "4.5.6"
            },
            {
              "status": "affected",
              "version": "4.5.7"
            },
            {
              "status": "affected",
              "version": "4.5.8"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad en warmcat libwebsockets hasta la versi\u00f3n 4.5.8. Este problema afecta a la funci\u00f3n lws_ssh_parse_plaintext del archivo plugins/protocol_lws_ssh_base/sshd.c del componente Gestor de Protocolo SSH. La ejecuci\u00f3n de una manipulaci\u00f3n del argumento msg_len puede llevar a un consumo de recursos. El ataque puede lanzarse de forma remota. El exploit ha sido publicado y puede ser utilizado. Este parche se llama 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498. Se debe aplicar un parche para remediar este problema."
    }
  ],
  "id": "CVE-2026-10650",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-10650",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-03T14:04:17.007618Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-02T22:16:16.293",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/biniamf/pocs/blob/main/libwebsockets_sshd-parse-ic-unbounded-alloc/poc_sshd_unbounded_alloc.py"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/warmcat/libwebsockets/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-10650"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/830261"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/367955"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/367955/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-404"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-23JV-8GF4-7R88

Vulnerability from github – Published: 2026-06-03 00:30 – Updated: 2026-06-03 00:30

Details

Severity

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

5.5 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-10650"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-02T22:16:16Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-23jv-8gf4-7r88",
  "modified": "2026-06-03T00:30:25Z",
  "published": "2026-06-03T00:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10650"
    },
    {
      "type": "WEB",
      "url": "https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biniamf/pocs/blob/main/libwebsockets_sshd-parse-ic-unbounded-alloc/poc_sshd_unbounded_alloc.py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biniamf/pocs/tree/main/libwebsockets_sshd-parse-ic-unbounded-alloc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/warmcat/libwebsockets"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-10650"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/830261"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367955"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367955/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

OESA-2026-2668 (CVE-2026-10650)

Vulnerability from osv_openeuler – Published: 2026-06-12 11:11 – Updated: 2026-08-06 11:11 – Source website

Summary

libwebsockets security update

Details

Libwebsockets (LWS) is a flexible, lightweight pure C library for implementing modern network protocols easily with a tiny footprint, using a nonblocking event loop.

Security Fix(es):

Severity

5.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-10650	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libwebsockets-4.3.0-8.oe2003sp4.aarch64.rpm",
          "libwebsockets-debuginfo-4.3.0-8.oe2003sp4.aarch64.rpm",
          "libwebsockets-debugsource-4.3.0-8.oe2003sp4.aarch64.rpm",
          "libwebsockets-devel-4.3.0-8.oe2003sp4.aarch64.rpm"
        ],
        "noarch": [
          "libwebsockets-help-4.3.0-8.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "libwebsockets-4.3.0-8.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "libwebsockets-4.3.0-8.oe2003sp4.x86_64.rpm",
          "libwebsockets-debuginfo-4.3.0-8.oe2003sp4.x86_64.rpm",
          "libwebsockets-debugsource-4.3.0-8.oe2003sp4.x86_64.rpm",
          "libwebsockets-devel-4.3.0-8.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "libwebsockets",
        "purl": "pkg:rpm/openEuler/libwebsockets\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3.0-8.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libwebsockets-4.3.0-8.oe2203sp4.aarch64.rpm",
          "libwebsockets-debuginfo-4.3.0-8.oe2203sp4.aarch64.rpm",
          "libwebsockets-debugsource-4.3.0-8.oe2203sp4.aarch64.rpm",
          "libwebsockets-devel-4.3.0-8.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "libwebsockets-help-4.3.0-8.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "libwebsockets-4.3.0-8.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "libwebsockets-4.3.0-8.oe2203sp4.x86_64.rpm",
          "libwebsockets-debuginfo-4.3.0-8.oe2203sp4.x86_64.rpm",
          "libwebsockets-debugsource-4.3.0-8.oe2203sp4.x86_64.rpm",
          "libwebsockets-devel-4.3.0-8.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "libwebsockets",
        "purl": "pkg:rpm/openEuler/libwebsockets\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3.0-8.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libwebsockets-4.3.3-5.oe2403sp1.aarch64.rpm",
          "libwebsockets-debuginfo-4.3.3-5.oe2403sp1.aarch64.rpm",
          "libwebsockets-debugsource-4.3.3-5.oe2403sp1.aarch64.rpm",
          "libwebsockets-devel-4.3.3-5.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "libwebsockets-help-4.3.3-5.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "libwebsockets-4.3.3-5.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "libwebsockets-4.3.3-5.oe2403sp1.x86_64.rpm",
          "libwebsockets-debuginfo-4.3.3-5.oe2403sp1.x86_64.rpm",
          "libwebsockets-debugsource-4.3.3-5.oe2403sp1.x86_64.rpm",
          "libwebsockets-devel-4.3.3-5.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "libwebsockets",
        "purl": "pkg:rpm/openEuler/libwebsockets\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3.3-5.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libwebsockets-4.3.3-5.oe2403sp3.aarch64.rpm",
          "libwebsockets-debuginfo-4.3.3-5.oe2403sp3.aarch64.rpm",
          "libwebsockets-debugsource-4.3.3-5.oe2403sp3.aarch64.rpm",
          "libwebsockets-devel-4.3.3-5.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "libwebsockets-help-4.3.3-5.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "libwebsockets-4.3.3-5.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "libwebsockets-4.3.3-5.oe2403sp3.x86_64.rpm",
          "libwebsockets-debuginfo-4.3.3-5.oe2403sp3.x86_64.rpm",
          "libwebsockets-debugsource-4.3.3-5.oe2403sp3.x86_64.rpm",
          "libwebsockets-devel-4.3.3-5.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "libwebsockets",
        "purl": "pkg:rpm/openEuler/libwebsockets\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3.3-5.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Libwebsockets (LWS) is a flexible, lightweight pure C library for implementing modern network protocols easily with a tiny footprint, using a nonblocking event loop.\r\n\r\nSecurity Fix(es):\n\nA 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.(CVE-2026-10650)",
  "id": "OESA-2026-2668",
  "modified": "2026-08-06T11:11:36Z",
  "published": "2026-06-12T11:11:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2668"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10650"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libwebsockets security update",
  "upstream": [
    "CVE-2026-10650"
  ]
}

UBUNTU-CVE-2026-10650 (CVE-2026-10650)

Vulnerability from osv_ubuntu – Published: 2026-06-02 22:16 – Updated: 2026-06-11 13:02 – Source website

Details

Severity

5.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

5.5 (Medium)


                    
                      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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-10650	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-10650	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "1.7.1-1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "1.7.1-1"
          },
          {
            "binary_name": "libwebsockets7",
            "binary_version": "1.7.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@1.7.1-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.2-1",
        "1.6.0-3",
        "1.6.0-4",
        "1.6.0-5",
        "1.6.1-1",
        "1.7.0-1ubuntu1",
        "1.7.0-2",
        "1.7.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "2.0.3-3build1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "2.0.3-3build1"
          },
          {
            "binary_name": "libwebsockets8",
            "binary_version": "2.0.3-3build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@2.0.3-3build1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.3-3",
        "2.0.3-3build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "3.2.1-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "3.2.1-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets15",
            "binary_version": "3.2.1-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@3.2.1-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.3-3build1",
        "3.2.1-3",
        "3.2.1-3ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.0.20-2ubuntu1.1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.0.20-2ubuntu1.1"
          },
          {
            "binary_name": "libwebsockets16",
            "binary_version": "4.0.20-2ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.0.20-2ubuntu1.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.20-2",
        "4.0.20-2ubuntu1",
        "4.0.20-2ubuntu1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.3.3-1.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.2-4",
        "4.3.3-1",
        "4.3.3-1.1build1",
        "4.3.3-1.1build2",
        "4.3.3-1.1build3",
        "4.3.3-1.1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.5-1"
          },
          {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.3.5-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.5-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.5-3ubuntu1"
          },
          {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.5-3ubuntu1"
          },
          {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.5-3ubuntu1"
          },
          {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.5-3ubuntu1"
          },
          {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.5-3ubuntu1"
          },
          {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.5-3ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libwebsockets",
        "purl": "pkg:deb/ubuntu/libwebsockets@4.3.5-3ubuntu1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.5-1",
        "4.3.5-3",
        "4.3.5-3ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-10650",
  "modified": "2026-06-11T13:02:03Z",
  "published": "2026-06-02T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-10650"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-10650"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-10650"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-10650 (GCVE-0-2026-10650)

BELL-CVE-2026-10650 (CVE-2026-10650)

FKIE_CVE-2026-10650

GHSA-23JV-8GF4-7R88

OESA-2026-2668 (CVE-2026-10650)

UBUNTU-CVE-2026-10650 (CVE-2026-10650)

Tags

Sightings

Nomenclature

Related by attack behaviour