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Misconfiguration
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CVE Vulnerabilities

CVE-2026-34487

Insertion of Sensitive Information into Log File

Published: Apr 09, 2026 | Modified: Apr 14, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
6.5 LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-34487
CWEhttps://cwe.mitre.org/data/definitions/532.html

Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.13 through 9.0.116.

Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

Weakness

The product writes sensitive information to a log file.

Affected Software

NameVendorStart VersionEnd Version
TomcatApache9.0.13 (including)9.0.117 (excluding)
TomcatApache10.1.0 (including)10.1.54 (excluding)
TomcatApache11.0.0 (including)11.0.21 (excluding)
Red Hat JBoss Web Server 6.2.3RedHattomcat*
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-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

References

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