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-2026-43512

CVE-2026-43512 describes an authentication bypass in the Digest authenticator of Apache Tomcat. Affected are Tomcat 11.0.0-M1 to 11.0.21, 10.1.0-M1 to 10.1.54, 9.0.0.M1 to 9.0.117, 8.5.0 to 8.5.100, and older/pre-7.0.0 versions. The issue is fixed in Tomcat 11.0.22, 10.1.55, and 9.0.118. Multiple...

CVE-2026-43512 Apache Tomcat: Digest authenticator will authenticate any unknown user

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication 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 before 7.0.0. Older unsupported...

CVE-2026-43512 Apache Tomcat: Digest authenticator will authenticate any unknown user

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication 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 before 7.0.0. Older unsupported...

CVE-2026-41293

Improper Input Validation vulnerability 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 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected. Users are recommended to...

CVE-2026-41293

Summary: CVE-2026-41293 is an Apache Tomcat vulnerability described as an Improper Input Validation issue. The connected sources confirm impact across multiple Tomcat branches: 11.0.0-M1 to 11.0.21, 10.1.0-M1 to 10.1.54, 9.0.0.M1 to 9.0.117, and 10.0.0-M1 to 10.0.27. The CVSS 3.1 data indicates a...

CVE-2026-42498

CVE-2026-42498 affects Apache Tomcat across multiple branches (7.0.83–7.0.109, 8.5.24–8.5.100, 9.0.2–9.0.117, 10.1.0-M1–10.1.54, 11.0.0-M1–11.0.21). Root cause: exposure of the HTTP Authentication header to unintended hosts during WebSocket authentication, enabling header leakage when a WebSocket...

CVE-2026-42498

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability 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 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through...

CVE-2026-42498 Apache Tomcat: WebSocket authentication header exposure

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability 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 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through...

CVE-2026-42498 Apache Tomcat: WebSocket authentication header exposure

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability 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 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through...

CVE-2026-41284

Allocation of Resources Without Limits or Throttling vulnerability 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. Older, unsupported versions may also be affected. Users are recommended to upgrade ...

CVE-2026-41284

CVE-2026-41284 describes an unbounded read vulnerability in WebDAV LOCK and PROPFIND handling in Apache Tomcat. Affected ranges include Tomcat 11.0.0-M1–11.0.21, 10.1.0-M1–10.1.54, and 9.0.0.M1–9.0.117 (older, unsupported versions may also be affected). The issue is triggered by a resource alloca...

CVE-2026-41284 Apache Tomcat: Unbounded read in WebDAV LOCK and PROPFIND handling

Allocation of Resources Without Limits or Throttling vulnerability 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. Older, unsupported versions may also be affected. Users are recommended to upgrade ...

Apache Tomcat 安全漏洞

Apache Tomcat is a lightweight Web application server developed by the Apache Foundation in the United States. It supports Servlet and JavaServer Page JSP technologies. Security vulnerabilities exist in versions of Apache Tomcat from 11.0.0-M1 to 11.0.21, from 10.1.0-M1 to 10.1.54, and from...

Apache Tomcat 安全漏洞

Apache Tomcat is a lightweight web application server developed by the Apache Foundation in the United States. It supports Servlet and JavaServer Page JSP technologies. Security vulnerabilities exist in versions of Apache Tomcat ranging from 11.0.0-M1 to 11.0.21, from 10.1.0-M1 to 10.1.54, from...

Apache Tomcat 授权问题漏洞

Apache Tomcat is a lightweight web application server developed by the Apache Foundation in the United States. It supports Servlet and JavaServer Page JSP technologies. Vulnerabilities exist in versions of Apache Tomcat ranging from 11.0.0-M1 to 11.0.21, from 10.1.0-M1 to 10.1.54, from 9.0.0.M1 t...

Apache Tomcat 信息泄露漏洞

Apache Tomcat is a lightweight web application server developed by the Apache Foundation in the United States. It supports Servlet and JavaServer Page JSP technologies. Apache Tomcat has a vulnerability related to information leakage, which stems from exposing HTTP authentication headers to...

Apache Tomcat 输入验证错误漏洞

Apache Tomcat is a lightweight web application server developed by the Apache Foundation in the United States. It supports Servlet and JavaServer Page JSP technologies. Vulnerabilities exist in versions of Apache Tomcat from 11.0.0-M1 to 11.0.21, 10.1.0-M1 to 10.1.54, 9.0.0.M1 to 9.0.117, and...

Apache Tomcat 安全漏洞

Apache Tomcat is a lightweight web application server developed by the Apache Foundation in the United States. It supports Servlet and JavaServer Page JSP technologies. Security vulnerabilities exist in versions of Apache Tomcat ranging from 11.0.0-M1 to 11.0.21, from 10.1.0-M1 to 10.1.54, from...

PT-2026-40068

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.21 Apache Tomcat versions 10.1.0-M1 through 10.1.54 Apache Tomcat versions 9.0.0.M1 through 9.0.117 Description An issue exists involving the allocation of resources without limits or throttling...