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CVE Vulnerabilities

CVE-2026-29146

Generation of Error Message Containing Sensitive Information

Published: Apr 09, 2026 | Modified: Jul 09, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-29146
CWEhttps://cwe.mitre.org/data/definitions/209.html

Padding Oracle vulnerability in Apache Tomcats 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.

Weakness

The product generates an error message that includes sensitive information about its environment, users, or associated data.

Affected Software

NameVendorStart VersionEnd Version
TomcatApache7.0.100 (including)7.0.109 (including)
TomcatApache8.5.38 (including)8.5.100 (including)
TomcatApache9.0.13 (including)9.0.116 (excluding)
TomcatApache10.0.0 (including)10.1.53 (excluding)
TomcatApache11.0.0 (including)11.0.20 (excluding)
Red Hat Enterprise Linux 10RedHattomcat-1:10.1.49-3.el10_2*
Red Hat Enterprise Linux 10RedHattomcat9-1:9.0.117-2.el10_2*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHattomcat-1:10.1.36-2.el10_0*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHattomcat9-1:9.0.87-6.el10_0*
Red Hat Enterprise Linux 8RedHattomcat-1:9.0.87-2.el8_10*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHattomcat-1:9.0.87-2.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHattomcat-1:9.0.87-2.el8_8*
Red Hat Enterprise Linux 9RedHattomcat-1:9.0.117-2.el9_8*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHattomcat-1:9.0.87-2.el9_2*
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRedHattomcat-1:9.0.87-2.el9_4*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHattomcat-1:9.0.87-4.el9_6*
Red Hat JBoss Web Server 6.2.3RedHat*
Red Hat JBoss Web Server 6.2 on RHEL 10RedHatjws6-tomcat-0:10.1.49-13.redhat_00011.1.el10jws*
Red Hat JBoss Web Server 6.2 on RHEL 8RedHatjws6-tomcat-0:10.1.49-13.redhat_00011.1.el8jws*
Red Hat JBoss Web Server 6.2 on RHEL 9RedHatjws6-tomcat-0:10.1.49-13.redhat_00011.1.el9jws*
Tomcat10Ubuntuesm-apps/noble*
Tomcat10Ubuntuesm-apps/resolute*
Tomcat10Ubuntunoble*
Tomcat10Ubuntuquesting*
Tomcat10Ubunturesolute*
Tomcat10Ubuntuupstream*
Tomcat11Ubuntuesm-apps/resolute*
Tomcat11Ubuntuquesting*
Tomcat11Ubunturesolute*
Tomcat11Ubuntuupstream*
Tomcat6Ubuntuesm-apps/xenial*
Tomcat6Ubuntuupstream*
Tomcat7Ubuntuesm-apps/xenial*
Tomcat7Ubuntuupstream*
Tomcat8Ubuntuesm-apps/bionic*
Tomcat8Ubuntuesm-infra/xenial*
Tomcat8Ubuntuupstream*
Tomcat9Ubuntuesm-apps/bionic*
Tomcat9Ubuntuesm-apps/focal*
Tomcat9Ubuntuesm-apps/jammy*
Tomcat9Ubuntuesm-apps/noble*
Tomcat9Ubuntuesm-apps/resolute*
Tomcat9Ubuntujammy*
Tomcat9Ubuntunoble*
Tomcat9Ubuntuquesting*
Tomcat9Ubunturesolute*
Tomcat9Ubuntuupstream*

Potential Mitigations

  • Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
  • If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
  • Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.

References

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