{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-83599","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-31T20:36:25.743Z","datePublished":"2026-09-22T16:54:56.419Z","dateUpdated":"2026-09-22T17:43:29.548Z"},"containers":{"cna":{"title":"Netdata: WebSocket Decompression Bomb","problemTypes":[{"descriptions":[{"cweId":"CWE-409","lang":"en","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","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:H","version":"3.1"}}],"references":[{"name":"https://github.com/netdata/netdata/security/advisories/GHSA-c8p4-cg3j-f4h2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netdata/netdata/security/advisories/GHSA-c8p4-cg3j-f4h2"},{"name":"https://github.com/netdata/netdata/pull/22828","tags":["x_refsource_MISC"],"url":"https://github.com/netdata/netdata/pull/22828"},{"name":"https://github.com/netdata/netdata/commit/e3811f7ee6e9fdfc4cbcb9929cab3f5d71d722d7","tags":["x_refsource_MISC"],"url":"https://github.com/netdata/netdata/commit/e3811f7ee6e9fdfc4cbcb9929cab3f5d71d722d7"},{"name":"https://github.com/netdata/netdata/releases/tag/v2.11.0","tags":["x_refsource_MISC"],"url":"https://github.com/netdata/netdata/releases/tag/v2.11.0"}],"affected":[{"vendor":"netdata","product":"netdata","versions":[{"version":"< 2.11.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-22T16:54:56.419Z"},"descriptions":[{"lang":"en","value":"Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, and src/web/websocket/websocket-compression.c allows websocket_client_decompress_message() to grow decompressed output toward WS_MAX_DECOMPRESSED_SIZE without enforcing a compressed-to-decompressed ratio. Small highly compressed frames can therefore cause large server-side allocations, and repeated concurrent connections can exhaust memory and terminate monitoring. This vulnerability is fixed in 2.11.0."}],"source":{"advisory":"GHSA-c8p4-cg3j-f4h2","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T17:36:21.063916Z","id":"CVE-2026-83599","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-22T17:43:29.548Z"}}]}}