{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45736", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T06:54:34.219Z", "datePublished": "2026-05-15T14:53:57.263Z", "dateUpdated": "2026-05-15T14:53:57.263Z"}, "containers": {"cna": {"title": "ws: Uninitialized memory disclosure", "problemTypes": [{"descriptions": [{"cweId": "CWE-908", "lang": "en", "description": "CWE-908: Use of Uninitialized Resource", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx"}, {"name": "https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086", "tags": ["x_refsource_MISC"], "url": "https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086"}], "affected": [{"vendor": "websockets", "product": "ws", "versions": [{"version": ">= 8.0.0, < 8.20.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-15T14:53:57.263Z"}, "descriptions": [{"lang": "en", "value": "ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1."}], "source": {"advisory": "GHSA-58qx-3vcg-4xpx", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1."}], "id": "CVE-2026-45736", "lastModified": "2026-05-15T15:16:54.103", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-15T15:16:54.103", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086"}, {"source": "security-advisories@github.com", "url": "https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.20.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ws", "source": "cna", "vendor": "websockets"}, "product": "ws", "vendor": "websockets"}], "created": "2026-05-15T16:30:03.658658+00:00", "updated": "2026-05-15T16:30:03.913857+00:00", "vendors": ["websockets", "websockets$PRODUCT$ws"]}