Skip to main content

Tomcat CVE-2026-29145

| EUVDEUVD-2026-21011 CRITICAL
Improper Authentication (CWE-287)
2026-04-09 apache GHSA-95jq-rwvf-vjx4
Apache Tomcat Authentication Bypass Red Hat Suse
Critical
Disputed · 9.1 NVD
Share

Severity by source

Sources disagree (Medium–Critical)
NVD PRIMARY
9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SUSE
CRITICAL
qualitative
Red Hat
5.9 MEDIUM
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

4
Patch released
Apr 11, 2026 - 02:30 nvd
Patch available
EUVD ID Assigned
Apr 09, 2026 - 19:45 euvd
EUVD-2026-21011
Analysis Generated
Apr 09, 2026 - 19:45 vuln.today
CVE Published
Apr 09, 2026 - 19:20 nvd
CRITICAL 9.1

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 2,028 maven packages depend on org.apache.tomcat.embed:tomcat-embed-core (52 direct, 1,977 indirect)
  • 1 maven packages depend on org.apache.tomcat:tomcat (1 direct, 0 indirect)
  • 11 maven packages depend on org.apache.tomcat:tomcat-catalina (9 direct, 2 indirect)

Ecosystem-wide dependent count for version 9.0.83 and other introduced versions.

DescriptionCVE.org

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.

AnalysisAI

Authentication bypass in Apache Tomcat 9.x through 11.x and Tomcat Native 1.1.23-2.0.13 allows unauthenticated remote attackers to bypass CLIENT_CERT authentication when soft-fail is disabled, achieving unauthorized access to confidentiality- and integrity-sensitive resources. Exploitation requires no user interaction or privileges (CVSS:3.1 PR:N/UI:N). The flaw affects CLIENT_CERT authentication logic, permitting access under conditions where authentication should fail. No public exploit identified at time of analysis; low observed exploitation activity (EPSS 0.04%).

Technical ContextAI

CWE-287 improper authentication allows CLIENT_CERT authentication to succeed incorrectly when soft-fail mode is disabled. The vulnerability exists in native SSL/TLS certificate verification routines shared across Tomcat servlet containers and Native connectors, impacting both Java-based Tomcat servers and the APR/native integration layer.

RemediationAI

Vendor-released patches: upgrade to Apache Tomcat 11.0.20, 10.1.53, or 9.0.116; upgrade Tomcat Native to 1.3.7 or 2.0.14. These versions resolve the CLIENT_CERT authentication bypass per official Apache advisory. Organizations using CLIENT_CERT authentication must prioritize upgrades given CVSS 9.1 critical severity and unauthenticated network attack vector. If immediate patching is infeasible, disable CLIENT_CERT authentication and migrate to alternative authentication mechanisms until upgrades complete. Verify authentication enforcement post-patch via functional testing of certificate-based access controls. Official advisory: https://lists.apache.org/thread/yz5fxmhd2j43wgqykssdo7kltws57jfz. Additional context: https://nvd.nist.gov/vuln/detail/CVE-2026-29145.

More in Tomcat

View all
CVE-2017-12617 HIGH POC
8.1 Oct 04

When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTT
CVE-2016-8735 CRITICAL POC
9.8 Apr 06

Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8
CVE-2017-12615 HIGH POC
8.1 Sep 19

When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g. Rated high severity (CVSS 8.1), this

CVE-2014-0050 HIGH POC
7.5 Apr 01

MultipartStream.java in Apache Commons FileUpload before 1.3.1, as used in Apache Tomcat, JBoss Web, and other products,
CVE-2017-12616 HIGH
7.5 Sep 19

When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security constraints and/or

CVE-2014-0227 MEDIUM
6.4 Feb 16

java/org/apache/coyote/http11/filters/ChunkedInputFilter.java in Apache Tomcat 6.x before 6.0.42, 7.x before 7.0.55, and
CVE-2013-5528 MEDIUM POC
4.0 Oct 11

Directory traversal vulnerability in the Tomcat administrative web interface in Cisco Unified Communications Manager all
CVE-2016-6808 CRITICAL POC
9.8 Apr 12

Buffer overflow in Apache Tomcat Connectors (mod_jk) before 1.2.42. Rated critical severity (CVSS 9.8), this vulnerabili
CVE-2016-1240 HIGH POC
7.8 Oct 03

The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before 8.0.14-1+deb8u3 on Debia
CVE-2016-5425 HIGH POC
7.8 Oct 13

The Tomcat package on Red Hat Enterprise Linux (RHEL) 7, Fedora, CentOS, Oracle Linux, and possibly other Linux distribu
CVE-2022-22965 CRITICAL POC
9.8 Apr 01

A Spring MVC or Spring WebFlux application running on JDK 9+ may be vulnerable to remote code execution (RCE) via data b
CVE-2025-31650 HIGH POC
7.5 Apr 28

Improper Input Validation vulnerability in Apache Tomcat. Rated high severity (CVSS 7.5), this vulnerability is remotely

Same weakness CWE-287 – Improper Authentication

View all
CVE-2020-0688 HIGH POC
8.8
CVE-2023-46805 HIGH POC
8.2
CVE-2015-1187 CRITICAL POC
9.8
CVE-2024-7593 CRITICAL POC
9.8
CVE-2017-7921 CRITICAL POC
9.8
CVE-2024-53704 CRITICAL POC
9.8
CVE-2015-7755 CRITICAL POC
9.8
CVE-2013-0625 CRITICAL POC
9.8

Same technique Authentication Bypass

View all
CVE-2023-22515 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2013-2465 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
9.8
CVE-2012-1723 CRITICAL POC
9.8
CVE-2017-10271 HIGH POC
7.5
CVE-2015-1427 CRITICAL POC
9.8
CVE-2025-3248 CRITICAL POC
9.8

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected

Share

CVE-2026-29145 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy