CVE-2026-43515

critical · 9.1

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.

9.1

CVSS

1.2%

EPSS (exploit prob.)

67th

EPSS percentile

2026-05-12

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-285

Affected products

Vendor	Product	Affected versions
apache	tomcat	>= 7.0.0, <= 7.0.109
apache	tomcat	>= 8.5.0, <= 8.5.100
apache	tomcat	>= 9.0.0, < 9.0.118
apache	tomcat	>= 10.1.0, < 10.1.55
apache	tomcat	>= 11.0.0, < 11.0.22

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb
http://www.openwall.com/lists/oss-security/2026/05/12/11

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-43515