{"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"}}]}}