{"cve":"CVE-2026-43515","nvd":{"published":"2026-05-12T16:16:18.553","modified":"2026-10-26T18:10:00.173","status":"Analyzed","description":"Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension 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 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-285"],"references":["https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb","http://www.openwall.com/lists/oss-security/2026/05/12/11"],"products":["apache:tomcat"],"source":"nvd","synced_at":"2026-10-26T18:27:13.530666824+00:00"},"epss":{"cve":"CVE-2026-43515","score":0.01221,"percentile":0.68508,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-5m62-pw8w-7w9f","url":"https://osv.dev/vulnerability/GHSA-5m62-pw8w-7w9f","summary":"Apache Tomcat - Security constraints not correctly applied","modified":"2026-09-11T08:25:25.696036560Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":["<9.0.118"],"fixed":["9.0.118"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=10.1.0-M1 <10.1.55"],"fixed":["10.1.55"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=11.0.0-M1 <11.0.22"],"fixed":["11.0.22"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":["<9.0.118"],"fixed":["9.0.118"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=10.1.0-M1 <10.1.55"],"fixed":["10.1.55"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=11.0.0-M1 <11.0.22"],"fixed":["11.0.22"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","ranges":["<9.0.118"],"fixed":["9.0.118"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","ranges":[">=10.1.0-M1 <10.1.55"],"fixed":["10.1.55"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","ranges":[">=11.0.0-M1 <11.0.22"],"fixed":["11.0.22"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}