{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-10650", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-06-02T15:19:20.070Z", "datePublished": "2026-06-02T21:15:10.566Z", "dateUpdated": "2026-06-02T21:15:10.566Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-06-02T21:15:10.566Z"}, "title": "warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-400", "lang": "en", "description": "Resource Consumption"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-404", "lang": "en", "description": "Denial of Service"}]}], "affected": [{"vendor": "warmcat", "product": "libwebsockets", "versions": [{"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", "status": "affected"}], "cpes": ["cpe:2.3:a:warmcat:libwebsockets:*:*:*:*:*:*:*:*"], "modules": ["SSH Protocol Handler"]}], "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."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 5.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 5.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 5, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2026-06-02T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-06-02T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-06-02T17:24:23.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "biniam (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/367955", "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/cti", "name": "VDB-367955 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-10650", "name": "CVE-2026-10650 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/830261", "name": "Submit #830261 | warmcat libwebsockets 4.5.99-v4.5.0-382-g4a63b9333 Uncontrolled Memory Allocation", "tags": ["third-party-advisory"]}, {"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": ["exploit"]}, {"url": "https://github.com/warmcat/libwebsockets/commit/3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498", "tags": ["patch"]}, {"url": "https://github.com/warmcat/libwebsockets/", "tags": ["product"]}], "tags": ["x_open-source"]}}}

{}

{"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."}], "id": "CVE-2026-10650", "lastModified": "2026-06-02T22:16:16.293", "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": "Primary"}], "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"}]}, "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-404"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.5.8"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "libwebsockets", "source": "cna", "vendor": "warmcat"}, "product": "libwebsockets", "vendor": "warmcat"}], "created": "2026-06-03T03:45:23.483470+00:00", "updated": "2026-06-03T04:15:24.753737+00:00", "vendors": ["warmcat", "warmcat$PRODUCT$libwebsockets"]}