Security Advisory

CVE-2025-53114

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-18 16:25:47

Last updated 2026-06-18 17:33:39

Assigner GitHub_M

CVSS score 7.5

State PUBLISHED

Description

CometD is a scalable comet implementation for web messaging. In versions 5.0.0 through 5.0.22, 6.0.0 through 6.0.18, 7.0.0 through 7.0.18, and 8.0.0 through 8.0.8, bad clients that always send a fixed batch value when the server is using the acknowledgement extension may cause the unacknowledged message queue to grow indefinitely, eventually causing an `OutOfMemoryError`. Versions 5.0.23, 6.0.19, 7.0.19, and 8.0.9 patch the issue. As a workaround, disable the acknowledgement extension.

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