{"id":"CVE-2026-77791","published":"2026-09-23T12:17:06.927","lastModified":"2026-09-23T19:19:19.043","description":"Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.88 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://lists.apache.org/thread/mb1pjjooqytrl6hbvbt3rw1lqwlon4cz","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/24","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}