Vulnerability DatabaseCVE-2026-43515
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CVE-2026-43515
Published:May 12, 2026
Updated:May 14, 2026
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 Packages
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=9.0.0-M1 <9.0.118
Fix Suggestion:
Update to version 9.0.118
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=11.0.0-M1 <11.0.22
Fix Suggestion:
Update to version 11.0.22
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=10.1.0-M1 <10.1.55
Fix Suggestion:
Update to version 10.1.55
org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.55
Fix Suggestion:
Update to version 10.1.55
org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=9.0.0.M1 <9.0.118
Fix Suggestion:
Update to version 9.0.118
org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.22
Fix Suggestion:
Update to version 11.0.22
org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.22
Fix Suggestion:
Update to version 11.0.22
org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=9.0.0.M1 <9.0.118
Fix Suggestion:
Update to version 9.0.118
org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.55
Fix Suggestion:
Update to version 10.1.55
Related Resources (2)
http://www.openwall.com/lists/oss-security/2026/05/12/11
https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Authorization
CWE-285
EPSS
Base Score:
0.02