{"id":"CVE-2026-25854","summary":"Apache Tomcat: Occasionally open redirect","details":"Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100.\nOther, unsupported versions may also be affected\n\nUsers are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.","aliases":["BIT-tomcat-2026-25854","GHSA-9m3c-qcxr-9x87"],"modified":"2026-05-18T05:58:37.449476039Z","published":"2026-04-09T19:13:13.529Z","related":["CGA-crpx-2gf3-6j5x","SUSE-SU-2026:1558-1","SUSE-SU-2026:1572-1","SUSE-SU-2026:1603-1","SUSE-SU-2026:1604-1","SUSE-SU-2026:21366-1","SUSE-SU-2026:21378-1","SUSE-SU-2026:21379-1","openSUSE-SU-2026:10547-1","openSUSE-SU-2026:10548-1","openSUSE-SU-2026:10549-1","openSUSE-SU-2026:20595-1","openSUSE-SU-2026:20611-1","openSUSE-SU-2026:20612-1"],"database_specific":{"cwe_ids":["CWE-601"],"cna_assigner":"apache","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"11.0.0-M1"},{"last_affected":"11.0.18"},{"introduced":"10.1.0-M1"},{"last_affected":"10.1.52"},{"introduced":"9.0.0.M23"},{"last_affected":"9.0.115"},{"introduced":"8.5.30"},{"last_affected":"8.5.100"}]},{"source":"DESCRIPTION","extracted_events":[{"introduced":"11.0.0-M1"},{"fixed":"11.0.18"},{"introduced":"10.1.0-M1"},{"fixed":"10.1.52"},{"introduced":"9.0.0.M23"},{"fixed":"9.0.115"},{"introduced":"8.5.30"},{"fixed":"8.5.100"}]}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25854.json"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/04/09/21"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25854.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25854"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/tomcat","events":[{"introduced":"0"},{"last_affected":"24566c02fb917a6ca1b6479a60971b0d8acd895c"},{"last_affected":"cac0e029dcced854eeca7444710e78e412dc2c2a"},{"last_affected":"c5efed313de1a181f4f9f98f5023117f3b911257"},{"last_affected":"ab04166fac59fcf9b3be3aab1c8b896842782d4c"},{"last_affected":"35071e7e52f296b9187b054b0efd74121b7db3bd"}],"database_specific":{"cpe":["cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"last_affected":"9.0.0-milestone23"},{"last_affected":"9.0.0-milestone24"},{"last_affected":"9.0.0-milestone25"},{"last_affected":"9.0.0-milestone26"},{"last_affected":"9.0.0-milestone27"}],"source":"CPE_FIELD"}}],"versions":["9.0.0-M27","9.0.0-M26","9.0.0-M25","9.0.0-M24","9.0.0-M23"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-25854.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}