{"id":"CVE-2025-53114","title":"CometD is a scalable comet implementation for web messaging","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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"cometd","product":"org.cometd.java:cometd-java-server-common","affected":["org.cometd.java:cometd-java-server-common >= 5.0.0, <= 5.0.22","org.cometd.java:cometd-java-server-common >= 6.0.0, <= 6.0.18","org.cometd.java:cometd-java-server-common >= 7.0.0, <= 7.0.18","org.cometd.java:cometd-java-server-common >= 8.0.0, <= 8.0.8"],"patched":["org.cometd.java:cometd-java-server-common 5.0.23","org.cometd.java:cometd-java-server-common 6.0.19","org.cometd.java:cometd-java-server-common 7.0.19","org.cometd.java:cometd-java-server-common 8.0.9"],"published":"2026-06-18","updated":"2026-10-12","sourceUpdated":"2026-10-12T22:10:00.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-53114","references":[{"url":"https://github.com/cometd/cometd/discussions/2116","label":"security-advisories@github.com"},{"url":"https://github.com/cometd/cometd/issues/2117","label":"security-advisories@github.com"},{"url":"https://github.com/cometd/cometd/pull/2118","label":"security-advisories@github.com"},{"url":"https://github.com/cometd/cometd/pull/2168","label":"security-advisories@github.com"},{"url":"https://github.com/cometd/cometd/pull/2169","label":"security-advisories@github.com"},{"url":"https://github.com/cometd/cometd/security/advisories/GHSA-cqgj-h8vf-4w59","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-cqgj-h8vf-4w59"}],"tags":["nvd","ghsa","maven"],"epss":0.00684,"epssPercentile":0.52374,"aliases":["GHSA-cqgj-h8vf-4w59"],"ecosystem":"maven","ingestedAt":"2026-07-07T15:41:59.561Z","slug":"CVE-2025-53114","body":"## Overview\n\nCometD 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2025-53114)\n\nAffected packages:\n\n- `org.cometd.java:cometd-java-server-common >= 5.0.0, <= 5.0.22`\n- `org.cometd.java:cometd-java-server-common >= 6.0.0, <= 6.0.18`\n- `org.cometd.java:cometd-java-server-common >= 7.0.0, <= 7.0.18`\n- `org.cometd.java:cometd-java-server-common >= 8.0.0, <= 8.0.8`\n\nPatched in:\n\n- `org.cometd.java:cometd-java-server-common 5.0.23`\n- `org.cometd.java:cometd-java-server-common 6.0.19`\n- `org.cometd.java:cometd-java-server-common 7.0.19`\n- `org.cometd.java:cometd-java-server-common 8.0.9`\n\nSource: https://github.com/advisories/GHSA-cqgj-h8vf-4w59","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}