BIT-tomcat-2026-43513

    Dashboard / Vulnerabilities / BIT-tomcat-2026-43513

    BIT-tomcat-2026-43513

    Published: 11 Sept 2026Last Modified: 11 Sept 2026

    Summary: Apache Tomcat: LockOutRealm treats user names as case-sensitive

    Details: Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.21, from 10.1.0 through 10.1.54, from 9.0.0 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.

    References: http://www.openwall.com/lists/oss-security/2026/05/12/9, https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp, https://nvd.nist.gov/vuln/detail/CVE-2026-43513

    Affected packages

    Package

    Name: tomcat

    Purl: pkg:bitnami/tomcat

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 10.0.0
    Fixed -10.1.55

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-tomcat-2026-43513 | CVE-DB