CVE-2026-43515 Security Details

CVE ID

CVE-2026-43515

CWE

CWE-285

CVE 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.

Published

May 14, 2026

CVSS Score & Severity

6.3Medium

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.085%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/apache/catalina/realm/RealmBase.findSecurityConstraints(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/Context;)[Lorg/apache/catalina/deploy/SecurityConstraint;

JVM

org/apache/catalina/realm/RealmBase.findSecurityConstraints(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/Context;)[Lorg/apache/tomcat/util/descriptor/web/SecurityConstraint;

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

GitHub · Advisory · GHSA-5m62-pw8w-7w9fPROJECT

Apache · AnnouncementPROJECT