Security Advisory

CVE-2026-62963

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-16 19:34:48

Last updated 2026-07-17 13:46:40

Assigner GitHub_M

CVSS score 8.7

State PUBLISHED

Description

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uni_websocket.compression enabled enforced uni_websocket.message_size_limit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but ReadMessage used io.ReadAll after decompression without an output cap, allowing unauthenticated requests to /connection/uni_websocket to trigger large memory and CPU consumption. This issue is fixed in version 6.8.4.

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