CVE-2026-43515
tomcat-coyote: tomcat: Improper Authorization allows security bypass
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 13, 2026
Updated · September 22, 2026
Description
In Apache Tomcat, when multiple security constraints defined an HTTP method constraint for the same extension pattern, only the first method constraint was applied. A remote attacker could exploit this to bypass intended security restrictions for information or actions within the application.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE-551 · Incorrect Behavior Order: Authorization Before Parsing and Canonicalization