CVE-2026-43513

Summary

Improper Handling of Case Sensitivity vulnerability in LockOutRealm 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. Older unsupported versions may also be affected.

Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

Affected Software

VendorProductVersion RangeStatus
Apache Software FoundationApache Tomcat11.0.0-M1 <= 11.0.21affected
Apache Software FoundationApache Tomcat10.1.0-M1 <= 10.1.54affected
Apache Software FoundationApache Tomcat9.0.0.M1 <= 9.0.117affected
Apache Software FoundationApache Tomcat8.5.0 <= 8.5.100affected
Apache Software FoundationApache Tomcat7.0.0 <= 7.0.109affected
Apache Software FoundationApache Tomcat0 < 7.00unknown

Weaknesses

  • CWE-178: CWE-178 Improper Handling of Case Sensitivity

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References