{"id":"CVE-2026-41293","summary":"Apache Tomcat: HTTP/2 request headers not validated","details":"Improper Input Validation vulnerability in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27.\nOlder, end of support versions may also be affected.\n\nUsers are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.","aliases":["BIT-tomcat-2026-41293","GHSA-r29c-68gh-xp6x"],"modified":"2026-06-09T09:14:11.199363069Z","published":"2026-05-12T15:19:35.179Z","related":["CGA-j3q7-84qp-4ff7","SUSE-SU-2026:2299-1","openSUSE-SU-2026:10925-1","openSUSE-SU-2026:10926-1","openSUSE-SU-2026:10927-1"],"database_specific":{"cna_assigner":"apache","cwe_ids":["CWE-20"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41293.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"11.0.0-M1"},{"last_affected":"11.0.21"},{"introduced":"10.1.0-M1"},{"last_affected":"10.1.54"},{"introduced":"9.0.0.M1"},{"last_affected":"9.0.117"},{"introduced":"10.0.0-M1"},{"last_affected":"10.0.27"},{"introduced":"8.5.0"},{"last_affected":"8.5.100"}]},{"source":"DESCRIPTION","extracted_events":[{"introduced":"11.0.0-M1"},{"fixed":"11.0.21"},{"introduced":"10.1.0-M1"},{"fixed":"10.1.54"},{"introduced":"9.0.0.M1"},{"fixed":"9.0.117"},{"introduced":"10.0.0-M1"},{"fixed":"10.0.27"}]}]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/12/13"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41293.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41293"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/tomcat","events":[{"introduced":"e37b977db6f47e4380ad67114a49e8568951c953"},{"last_affected":"eddcf278ad919382608ada1898b2c5b63675c6d5"},{"introduced":"4c8b650437e2464c1c31c6598a263b3805b7a81f"},{"last_affected":"ca8720d41f3be917dc3fcdd03fcca8d3152a13fb"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"8.5.0"},{"last_affected":"8.5.100"},{"introduced":"10.0.0"},{"last_affected":"10.0.27"}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-41293.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}