Resource exhaustion in Cometd
CVE-2025-53114
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 t…
Vulnerability class: DoS (Denial of Service)
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cometd — versions >= 5.0.0, < 5.0.23, >= 6.0.0, < 6.0.19, >= 7.0.0, < 7.0.19
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-53114?
- CVE-2025-53114 is a high-severity vulnerability in Cometd, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-06-18.
- How severe is CVE-2025-53114?
- High severity. CVSS v3 base score is 7.5 out of 10.