CVE-2026-43515 Details
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.
A vulnerability has been identified in Apache Tomcat that allows improper authorization when multiple method constraints are defined for the same extension pattern. This issue affects Apache Tomcat versions 11.0.0-M1 prior to 11.0.21, 10.1.0-M1 prior to 10.1.54, 9.0.0-M1 prior to 9.0.117, 8.5.0 prior to 8.5.100, and 7.0.0 prior to 7.0.109. In the affected versions, only the first method constraint is applied, potentially leading to unauthorized access.
Users are advised to upgrade to Apache Tomcat versions 11.0.22, 10.1.55, or 9.0.118.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 14, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/05/12/11 | CVE | Mailing ListThird Party Advisory |
| https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb | [email protected] | Mailing ListVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache tomcat | >= 7.0.0, <= 7.0.109 >= 8.5.0, <= 8.5.100 >= 9.0.0, < 9.0.118 >= 10.1.0, < 10.1.55 >= 11.0.0, < 11.0.22 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 14, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | CVE Modified | CVE |
| May 12, 2026 | New CVE Received | [email protected] |