{"id":"BIT-tomcat-2026-79677","summary":"Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout","details":"Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0 through 11.0.25, from 10.1.0 through 10.1.59, from 9.0.0 through 9.0.121.\n\n\n\nThe following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.","aliases":["CVE-2026-79677"],"modified":"2026-10-01T10:00:18.288969141Z","published":"2026-10-01T09:36:33.350Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:*:*:*:*:*:maven:*:*"]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/09/23/27"},{"type":"WEB","url":"https://lists.apache.org/thread/bzwps6ck4szf2hmksbbon3syyl9qnkv8"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79677"}],"affected":[{"package":{"name":"tomcat","ecosystem":"Bitnami","purl":"pkg:bitnami/tomcat"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.0.45"},{"introduced":"10.1.0"},{"fixed":"10.1.60"},{"introduced":"11.0.0"},{"fixed":"11.0.26"},{"introduced":"9.0.0"},{"fixed":"9.0.122"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/tomcat/BIT-tomcat-2026-79677.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}