Critical severity9.1NVD Advisory· Published May 12, 2026· Updated May 15, 2026
CVE-2026-43515
CVE-2026-43515
Description
Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension in Apache Tomcat.
This 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.
Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- www.openwall.com/lists/oss-security/2026/05/12/11nvdMailing ListThird Party Advisory
- lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bbnvdMailing ListVendor Advisory
News mentions
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- Siemens SIMATICCISA Alerts