HIGH 7.5 NVD
CVE-2026-83599
Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, a
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.
References
- https://github.com/netdata/netdata/commit/e3811f7ee6e9fdfc4cbcb9929cab3f5d71d722d7
- https://github.com/netdata/netdata/pull/22828
- https://github.com/netdata/netdata/releases/tag/v2.11.0
- https://github.com/netdata/netdata/security/advisories/GHSA-c8p4-cg3j-f4h2
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-09-22 via NVD.
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