{"id":"CVE-2026-77756","published":"2026-09-23T12:17:06.663","lastModified":"2026-09-23T19:19:18.720","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse proxy.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.47 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 8.5.67 through 8.5.100. 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.","cvssScore":3.7,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-444"],"vendors":[],"products":[],"references":[{"url":"https://lists.apache.org/thread/bl5b6rxqh3vb2k9bj2794vhor7o6xl3z","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/22","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}