Home

Description

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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-12 | Updated 2026-05-14 | Assigner apache

Problem types

CWE-178 Improper Handling of Case Sensitivity

Product status

Default status
unaffected

11.0.0-M1 (semver)
affected

10.1.0-M1 (semver)
affected

9.0.0.M1 (semver)
affected

8.5.0 (semver)
affected

7.0.0 (semver)
affected

Any version before 7.00
unknown

References

www.openwall.com/lists/oss-security/2026/05/12/9

lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp vendor-advisory

cve.org (CVE-2026-43513)

nvd.nist.gov (CVE-2026-43513)

Download JSON