CVE-2025-53114 (GCVE-0-2025-53114)

Vulnerability from cvelistv5 – Published: 2026-06-18 16:25 – Updated: 2026-06-18 17:33
VLAI
Title
CometD has acknowledgement extension out of memory
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 17:30 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version CPE status
cometd cometd Affected: >= 5.0.0, < 5.0.23
Affected: >= 6.0.0, < 6.0.19
Affected: >= 7.0.0, < 7.0.19
Affected: >= 8.0.0, < 8.0.9
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