{"id":"CVE-2025-53114","summary":"CometD has acknowledgement extension out of memory","details":"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.","aliases":["GHSA-cqgj-h8vf-4w59"],"modified":"2026-08-12T03:51:20.800088047Z","published":"2026-06-18T16:25:47.388Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53114.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-400"]},"references":[{"type":"WEB","url":"https://github.com/cometd/cometd/discussions/2116"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53114.json"},{"type":"ADVISORY","url":"https://github.com/cometd/cometd/security/advisories/GHSA-cqgj-h8vf-4w59"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53114"},{"type":"REPORT","url":"https://github.com/cometd/cometd/issues/2117"},{"type":"FIX","url":"https://github.com/cometd/cometd/pull/2118"},{"type":"FIX","url":"https://github.com/cometd/cometd/pull/2168"},{"type":"FIX","url":"https://github.com/cometd/cometd/pull/2169"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cometd/cometd","events":[{"introduced":"cf70b858ed344a941fac8fa8deb6def3327d464f"},{"fixed":"baf656acc36fe00a0c1058ce28213272ac777549"},{"introduced":"129e30f07db92e60fba1d330f08b9607156dcd60"},{"fixed":"d8bef500d01b74b370cfc86e5b07d32ed2baf11e"},{"introduced":"75c9c8e2d5c34c68df8484ad113beb1624bfe3f2"},{"fixed":"52b8fca89b0515b14e421644f5acf92da978f002"},{"introduced":"fe29bbede69bbe8c54c29ffc0a4c3c32ca1b9475"},{"fixed":"7c79c83bc3e57d5f0b57e52b84ac9dcf3869a4aa"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"5.0.0"},{"fixed":"5.0.23"},{"introduced":"6.0.0"},{"fixed":"6.0.19"},{"introduced":"7.0.0"},{"fixed":"7.0.19"},{"introduced":"8.0.0"},{"fixed":"8.0.9"}]}}],"versions":["7.0.18","6.0.18","5.0.22","8.0.8","8.0.7","8.0.6","8.0.5","7.0.17","6.0.17","5.0.21","8.0.4","8.0.3","7.0.16","6.0.16","5.0.20","8.0.2","7.0.15","6.0.15","5.0.19","8.0.1","8.0.0","7.0.14","6.0.14","7.0.13","6.0.13","5.0.18","5.0.17","7.0.12","6.0.12","7.0.11","6.0.11","5.0.16","7.0.10","6.0.10","5.0.15","7.0.9","6.0.9","5.0.14","7.0.8","6.0.8","5.0.13","7.0.7","6.0.7","5.0.12","7.0.6","6.0.6","5.0.11","7.0.5","6.0.5","5.0.10","7.0.4","6.0.4","5.0.9","7.0.3","6.0.3","5.0.8","5.0.7","7.0.2","6.0.2","5.0.6","7.0.1","6.0.1","5.0.5","5.0.4","7.0.0","6.0.0","5.0.3","5.0.2","5.0.1","5.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53114.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}