{"id":"DEBIAN-CVE-2026-83599","details":"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.","modified":"2026-09-24T08:47:36.563489034Z","published":"2026-09-22T17:17:25.957Z","upstream":["CVE-2026-83599"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-83599"}],"affected":[{"package":{"name":"netdata","ecosystem":"Debian:12","purl":"pkg:deb/debian/netdata?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.37.1-2","1.38.0-1","1.38.1-1","1.39.0-1","1.39.1-1","1.39.1-2","1.40.0-1","1.40.0-2","1.40.1-1","1.41.0-1","1.42.0-1","1.42.1-1","1.42.2-1","1.42.3-1","1.42.4-1","1.43.0-1","1.43.1-1","1.43.2-1","1.44.3-1","1.44.3-2","1.46.3-1","1.46.3-2","1.47.0-1","1.47.1-1","1.47.2-1","1.47.5-1","2.0.3+dfsg-1","2.0.3+dfsg-2","2.0.3+dfsg-3","2.0.3+dfsg-4","2.0.3+dfsg-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-83599.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}