Vulnerability Database

346,350

Total vulnerabilities in the database

CVE-2026-29145 — org.apache.tomcat / tomcat

Improper Authentication

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13.

Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.

CVSS v3:

  • Severity: Critical
  • Score: 9.1
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Software From Fixed in
Maven icon org.apache.tomcat / tomcat 9.0.83 9.0.116
Maven icon org.apache.tomcat / tomcat 10.1.0-M7 10.1.53
Maven icon org.apache.tomcat / tomcat 11.0.0-M1 11.0.20
apache / tomcat 9.0.83 9.0.116
apache / tomcat 10.1.1 10.1.53
apache / tomcat 11.0.0 11.0.20
apache / tomcat 10.1.0 10.1.0.x
apache / tomcat 10.1.0-milestone10 10.1.0-milestone10.x
apache / tomcat 10.1.0-milestone11 10.1.0-milestone11.x
apache / tomcat 10.1.0-milestone12 10.1.0-milestone12.x
apache / tomcat 10.1.0-milestone13 10.1.0-milestone13.x
apache / tomcat 10.1.0-milestone14 10.1.0-milestone14.x
apache / tomcat 10.1.0-milestone15 10.1.0-milestone15.x
apache / tomcat 10.1.0-milestone16 10.1.0-milestone16.x
apache / tomcat 10.1.0-milestone17 10.1.0-milestone17.x
apache / tomcat 10.1.0-milestone18 10.1.0-milestone18.x
apache / tomcat 10.1.0-milestone19 10.1.0-milestone19.x
apache / tomcat 10.1.0-milestone20 10.1.0-milestone20.x
apache / tomcat 10.1.0-milestone7 10.1.0-milestone7.x
apache / tomcat 10.1.0-milestone8 10.1.0-milestone8.x
apache / tomcat 10.1.0-milestone9 10.1.0-milestone9.x
apache / tomcat_native 1.1.23 1.3.7
apache / tomcat_native 2.0.0 2.0.14
Maven icon org.apache.tomcat / tomcat-coyote-ffm 9.0.83 9.0.116
Maven icon org.apache.tomcat / tomcat-coyote-ffm 10.1.0-M7 10.1.53
Maven icon org.apache.tomcat / tomcat-coyote-ffm 11.0.0-M1 11.0.20

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.