{"cve":"CVE-2025-53114","nvd":{"published":"2026-06-18T17:16:27.150","modified":"2026-10-12T22:10:00.247","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://github.com/cometd/cometd/discussions/2116","https://github.com/cometd/cometd/issues/2117","https://github.com/cometd/cometd/pull/2118","https://github.com/cometd/cometd/pull/2168","https://github.com/cometd/cometd/pull/2169"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:39:28.638635428+00:00"},"epss":{"cve":"CVE-2025-53114","score":0.00684,"percentile":0.52298,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-cqgj-h8vf-4w59","url":"https://osv.dev/vulnerability/GHSA-cqgj-h8vf-4w59","summary":"Acknowledgement extension out of memory","modified":"2026-06-10T17:11:27.329206Z","packages":[{"ecosystem":"Maven","name":"org.cometd.java:cometd-java-server-common","purl":"pkg:maven/org.cometd.java/cometd-java-server-common","ranges":[">=5.0.0 <5.0.23"],"fixed":["5.0.23"]},{"ecosystem":"Maven","name":"org.cometd.java:cometd-java-server-common","purl":"pkg:maven/org.cometd.java/cometd-java-server-common","ranges":[">=6.0.0 <6.0.19"],"fixed":["6.0.19"]},{"ecosystem":"Maven","name":"org.cometd.java:cometd-java-server-common","purl":"pkg:maven/org.cometd.java/cometd-java-server-common","ranges":[">=7.0.0 <7.0.19"],"fixed":["7.0.19"]},{"ecosystem":"Maven","name":"org.cometd.java:cometd-java-server-common","purl":"pkg:maven/org.cometd.java/cometd-java-server-common","ranges":[">=8.0.0 <8.0.9"],"fixed":["8.0.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}