CVE-2026-43515CWE-285

Apache Tomcat: Security constraints not correctly applied

Critical · published May 12, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
68.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01221 · 68.5th percentile
Weakness
CWE-285 · Improper Authorization
Published
2026-05-12T15:33Z
EPSS history
Timeline
  • 12 MAY 15:33Z
    Apache Tomcat: Security constraints not correctly applied
    cvelistv5