CVE-2026-43515: CWE-285 Improper Authorization in Apache Software Foundation Apache Tomcat
CVE-2026-43515 is an improper authorization vulnerability in Apache Tomcat affecting multiple versions from 7. 0. 0 through 11. 0. 21. The issue arises when multiple method constraints define an HTTP method for the same extension, potentially leading to authorization bypass. Apache Software Foundation has released fixed versions 11. 0. 22, 10. 1.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43515) 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 issue can cause authorization checks to be bypassed under certain configurations. The Apache Software Foundation has fixed the vulnerability in versions 11.0.22, 10.1.55, and 9.0.118. No CVSS score is provided, and no known exploits have been reported.
Potential Impact
If exploited, this vulnerability could allow unauthorized access or actions by bypassing intended authorization controls in affected Apache Tomcat versions. This could lead to unauthorized operations on web applications running on these Tomcat instances. However, no active exploitation has been reported so far.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to version 11.0.22, 10.1.55, or 9.0.118 as these versions contain the official fixes for this vulnerability. No other mitigation or temporary workaround is indicated in the available data.
CVE-2026-43515: CWE-285 Improper Authorization in Apache Software Foundation Apache Tomcat
Description
CVE-2026-43515 is an improper authorization vulnerability in Apache Tomcat affecting multiple versions from 7. 0. 0 through 11. 0. 21. The issue arises when multiple method constraints define an HTTP method for the same extension, potentially leading to authorization bypass. Apache Software Foundation has released fixed versions 11. 0. 22, 10. 1.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43515) 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 issue can cause authorization checks to be bypassed under certain configurations. The Apache Software Foundation has fixed the vulnerability in versions 11.0.22, 10.1.55, and 9.0.118. No CVSS score is provided, and no known exploits have been reported.
Potential Impact
If exploited, this vulnerability could allow unauthorized access or actions by bypassing intended authorization controls in affected Apache Tomcat versions. This could lead to unauthorized operations on web applications running on these Tomcat instances. However, no active exploitation has been reported so far.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to version 11.0.22, 10.1.55, or 9.0.118 as these versions contain the official fixes for this vulnerability. No other mitigation or temporary workaround is indicated in the available data.
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: 5/12/2026, 3:51:39 PM
Last enriched: 5/12/2026, 4:06:21 PM
Last updated: 5/12/2026, 5:58:55 PM
Views: 125
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.