CVE-2026-43513

Improper Handling of Case Sensitivity vulnerability in LockOutRealm in...

CLSA-2026-1779893247 Fix of 5 CVEs

SECURITY UPDATE: add case sensitive attribute to LockOutRealm - debian/patches/CVE-2026-43513.patch: add case sensitive attribute to LockOutRealm - CVE-2026-43513 SECURITY UPDATE: fix the handling of invalid users with DIGEST authentication - debian/patches/CVE-2026-43512.patch: fix the handling ...

BIT-TOMCAT-2026-43513 Apache Tomcat: LockOutRealm treats user names as case-sensitive

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...

SUSE CVE-2026-43513

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...

Linux Distros Unpatched Vulnerability : CVE-2026-43513

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

GHSA-5MP6-JRQ3-R938 Apache Tomcat: LockOutRealm treats user names as case-sensitive

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...

EUVD-2026-29517

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...

Apache Tomcat: LockOutRealm treats user names as case-sensitive

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...

Improper Handling of Case Sensitivity

Overview org.apache.tomcat:catalina is a Servlet Engine Core Classes and Standard implementations. Affected versions of this package are vulnerable to Improper Handling of Case Sensitivity in the LockOutRealm function. An attacker can bypass account lockout protections by submitting usernames wit...

Improper Handling of Case Sensitivity

Overview tomcat:catalina is a library that contains Tomcat Servlet Engine Core Classes and Standard implementations. Affected versions of this package are vulnerable to Improper Handling of Case Sensitivity in the LockOutRealm function. An attacker can bypass account lockout protections by...

CVE-2026-43513

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...

UBUNTU-CVE-2026-43513

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...

CVE-2026-43513 Apache Tomcat: LockOutRealm treats user names as case-sensitive

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...

CVE-2026-43513

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...

EUVD-2022-5668

Malicious code in bioql PyPI...

Timing Attack

tomcat-catalina is vulnerable to timing attacks. When the supplied username does not exist, the Realm implementation will not process the supplied password, making a timing attack possible to determine valid usernames. Note that the default configuration includes the LockOutRealm which makes...

Default configuration

The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note...

CVE-2016-0762

Removed by vendor...

RedHat Update for tomcat RHSA-2017:2247-01

The remote host is missing an update for the Copyright C 2017 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

CVE-2016-0762

The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note...