Apache Tomcat up to 8.5.99/9.0.115/10.1.52/11.0.18 CLIENT_CERT Authentication improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apache Tomcat up to 8.5.99/9.0.115/10.1.52/11.0.18. This affects an unknown function of the component CLIENT_CERT Authentication. Performing a manipulation results in improper authentication. This vulnerability is identified as CVE-2026-29145. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apache Tomcat up to 8.5.99/9.0.115/10.1.52/11.0.18. This affects an unknown code of the component CLIENT_CERT Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released by Gregk4Sec. The advisory is shared at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-29145 since 03/04/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/10/2026).

The vulnerability scanner Nessus provides a plugin with the ID 305884 (Linux Distros Unpatched Vulnerability : CVE-2026-29145), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.0.116, 10.1.53 or 11.0.20 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (305884) and CERT Bund (WID-SEC-2026-1038). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • IBM Power Hardware Management Console
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • IBM Spectrum Protect Plus
  • Apache Tomcat
  • HCL Commerce
  • Red Hat JBoss Web Server

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 305884
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-29145

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Tomcat 9.0.116/10.1.53/11.0.20

Timelineinfo

03/04/2026 CVE reserved
04/09/2026 +35 days Advisory disclosed
04/09/2026 +0 days VulDB entry created
07/10/2026 +92 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Researcher: Gregk4Sec
Status: Confirmed

CVE: CVE-2026-29145 (🔒)
GCVE (CVE): GCVE-0-2026-29145
GCVE (VulDB): GCVE-100-356661
CERT Bund: WID-SEC-2026-1038 - Apache Tomcat und Tomcat Native: Mehrere Schwachstellen

Entryinfo

Created: 04/09/2026 22:02
Updated: 07/10/2026 07:04
Changes: 04/09/2026 22:02 (57), 04/12/2026 08:04 (2), 05/04/2026 01:00 (7), 07/10/2026 07:04 (1)
Complete: 🔍
Cache ID: 216::103

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Discussion

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