CVE-2026-43513: CWE-178 Improper Handling of Case Sensitivity in Apache Software Foundation Apache Tomcat
CVE-2026-43513 is a vulnerability in Apache Tomcat's LockOutRealm component involving improper handling of case sensitivity. It affects multiple versions of Apache Tomcat, including 7. 0. 0 through 7. 0. 109, 8. 5. 0 through 8. 5. 100, 9.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43513) concerns improper handling of case sensitivity in the LockOutRealm authentication component of Apache Tomcat. The flaw exists across a wide range of Tomcat versions from 7.0.0 to 11.0.21. The Apache Software Foundation has fixed the issue in versions 11.0.22, 10.1.55, and 9.0.118. The vulnerability is categorized under CWE-178 (Improper Handling of Case Sensitivity). No CVSS score or detailed technical exploitation information is available in the provided data.
Potential Impact
The vulnerability could potentially allow authentication or authorization issues due to case sensitivity mishandling in LockOutRealm, which may affect access control. However, no known exploits in the wild have been reported, and the exact impact details are not specified in the available information.
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 fix for this vulnerability. No other mitigation details or temporary workarounds are provided. Patch status is confirmed by the vendor advisory recommending these upgrade versions.
CVE-2026-43513: CWE-178 Improper Handling of Case Sensitivity in Apache Software Foundation Apache Tomcat
Description
CVE-2026-43513 is a vulnerability in Apache Tomcat's LockOutRealm component involving improper handling of case sensitivity. It affects multiple versions of Apache Tomcat, including 7. 0. 0 through 7. 0. 109, 8. 5. 0 through 8. 5. 100, 9.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43513) concerns improper handling of case sensitivity in the LockOutRealm authentication component of Apache Tomcat. The flaw exists across a wide range of Tomcat versions from 7.0.0 to 11.0.21. The Apache Software Foundation has fixed the issue in versions 11.0.22, 10.1.55, and 9.0.118. The vulnerability is categorized under CWE-178 (Improper Handling of Case Sensitivity). No CVSS score or detailed technical exploitation information is available in the provided data.
Potential Impact
The vulnerability could potentially allow authentication or authorization issues due to case sensitivity mishandling in LockOutRealm, which may affect access control. However, no known exploits in the wild have been reported, and the exact impact details are not specified in the available information.
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 fix for this vulnerability. No other mitigation details or temporary workarounds are provided. Patch status is confirmed by the vendor advisory recommending these upgrade versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-01T16:21:04.703Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a034c88cbff5d8610fea6ef
Added to database: 5/12/2026, 3:51:36 PM
Last enriched: 5/12/2026, 4:06:35 PM
Last updated: 5/12/2026, 6:18:56 PM
Views: 4
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