Apache Tomcat up to 11.0.18 EncryptInterceptor reliance on obfuscation or encryption of security-relevant inputs without integrity checking

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apache Tomcat up to 7.0.109/8.5.100/9.0.115/10.1.52/11.0.18 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component EncryptInterceptor. This manipulation causes reliance on obfuscation or encryption of security-relevant inputs without integrity checking. This vulnerability appears as CVE-2026-29146. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Apache Tomcat up to 7.0.109/8.5.100/9.0.115/10.1.52/11.0.18. Affected by this vulnerability is an unknown part of the component EncryptInterceptor. The manipulation with an unknown input leads to a reliance on obfuscation or encryption of security-relevant inputs without integrity checking vulnerability. The CWE definition for the vulnerability is CWE-649. The product uses obfuscation or encryption of inputs that should not be mutable by an external actor, but the product does not use integrity checks to detect if those inputs have been modified. As an impact it is known to affect confidentiality. The summary by CVE is:

Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.0.0-M1 through 10.1.52, from 9.0.13 through 9..115, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue.

The weakness was presented by Uri Katz and Avi Lumelsky. The advisory is shared at lists.apache.org. This vulnerability is known as CVE-2026-29146 since 03/04/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 305904 (Linux Distros Unpatched Vulnerability : CVE-2026-29146), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.0.116, 10.1.53 or 11.0.19 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (305904) 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: 5.5

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Reliance on obfuscation or encryption of security-relevant inputs without integrity checking
CWE: CWE-649 / CWE-325
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: 305904
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-29146

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Tomcat 9.0.116/10.1.53/11.0.19

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: Uri Katz, Avi Lumelsky
Status: Confirmed

CVE: CVE-2026-29146 (🔒)
GCVE (CVE): GCVE-0-2026-29146
GCVE (VulDB): GCVE-100-356653
CERT Bund: WID-SEC-2026-1038 - Apache Tomcat und Tomcat Native: Mehrere Schwachstellen

Entryinfo

Created: 04/09/2026 21:59
Updated: 07/10/2026 07:04
Changes: 04/09/2026 21:59 (56), 04/11/2026 01:12 (2), 05/04/2026 01:00 (7), 07/02/2026 05:08 (11), 07/10/2026 07:04 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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