CVE-2026-43515: CWE-285 Improper Authorization in Apache Software Foundation Apache Tomcat
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.
AI Analysis
Technical Summary
This vulnerability in Apache Tomcat involves improper authorization due to conflicting method constraints for the same HTTP method and extension. It affects a wide range of Tomcat versions from 7.0.0 through 11.0.21. The flaw could allow an attacker to bypass authorization controls, leading to unauthorized access with high confidentiality and integrity impact. The Apache Software Foundation has addressed the issue in versions 11.0.22, 10.1.55, and 9.0.118. No known exploits in the wild have been reported at this time.
Potential Impact
The vulnerability allows unauthorized access by bypassing authorization checks when multiple method constraints overlap for the same HTTP method and extension. This can lead to disclosure or modification of sensitive information (high confidentiality and integrity impact). There is no impact on availability. The vulnerability is remotely exploitable without any privileges or user interaction.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.22, 10.1.55, or 9.0.118 as these versions contain the official fix for this vulnerability. No other mitigation or temporary workaround is indicated in the available data. Patch status is confirmed by the vendor advisory recommending these versions.
CVE-2026-43515: CWE-285 Improper Authorization in Apache Software Foundation Apache Tomcat
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.
CVSS v3.1
Score 9.1critical
Affected software
pkg:maven/org.apache.tomcat/tomcatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache Tomcat involves improper authorization due to conflicting method constraints for the same HTTP method and extension. It affects a wide range of Tomcat versions from 7.0.0 through 11.0.21. The flaw could allow an attacker to bypass authorization controls, leading to unauthorized access with high confidentiality and integrity impact. The Apache Software Foundation has addressed the issue in versions 11.0.22, 10.1.55, and 9.0.118. No known exploits in the wild have been reported at this time.
Potential Impact
The vulnerability allows unauthorized access by bypassing authorization checks when multiple method constraints overlap for the same HTTP method and extension. This can lead to disclosure or modification of sensitive information (high confidentiality and integrity impact). There is no impact on availability. The vulnerability is remotely exploitable without any privileges or user interaction.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.22, 10.1.55, or 9.0.118 as these versions contain the official fix for this vulnerability. No other mitigation or temporary workaround is indicated in the available data. Patch status is confirmed by the vendor advisory recommending these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-01T16:24:01.021Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a034c8bcbff5d8610fea719
Added to database: 05/12/2026, 15:51:39 UTC
Last enriched: 06/04/2026, 19:59:10 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 297
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