CVEvulnerability

CVE-2026-83599

7.5 HIGH Published 2026-09-22 Modified 2026-09-23 Official page ↗
Status
Awaiting Analysis
Published
2026-09-22
Last modified
2026-09-23
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-409

Description

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.

Related

Weakness · CWE (1)

  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) weakness

References