CVE-2026-34487: CWE-532 Insertion of Sensitive Information into Log File in Apache Software Foundation Apache Tomcat
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.
AI Analysis
Technical Summary
This vulnerability (CWE-532) involves the insertion of sensitive Kubernetes bearer tokens into log files by the cloud membership component used for clustering in Apache Tomcat. Affected versions include multiple releases across the 9.0.x, 10.1.x, and 11.0.x branches. The exposure of bearer tokens in logs can lead to unauthorized access if logs are accessed by attackers. The Apache Software Foundation has addressed this issue in subsequent releases, recommending upgrades to versions 11.0.21, 10.1.54, or 9.0.117.
Potential Impact
The vulnerability allows sensitive Kubernetes bearer tokens to be written to log files, potentially exposing them to unauthorized users who have access to these logs. This could lead to unauthorized access to Kubernetes resources if the tokens are compromised. There is no indication of known exploits in the wild at this time.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat versions to 11.0.21, 10.1.54, or 9.0.117, where the issue is fixed. Since this is a software vulnerability, applying the official patch via upgrade is the recommended remediation. Patch status is confirmed by the vendor advisory recommending these versions. No other mitigations are indicated.
CVE-2026-34487: CWE-532 Insertion of Sensitive Information into Log File in Apache Software Foundation Apache Tomcat
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-532) involves the insertion of sensitive Kubernetes bearer tokens into log files by the cloud membership component used for clustering in Apache Tomcat. Affected versions include multiple releases across the 9.0.x, 10.1.x, and 11.0.x branches. The exposure of bearer tokens in logs can lead to unauthorized access if logs are accessed by attackers. The Apache Software Foundation has addressed this issue in subsequent releases, recommending upgrades to versions 11.0.21, 10.1.54, or 9.0.117.
Potential Impact
The vulnerability allows sensitive Kubernetes bearer tokens to be written to log files, potentially exposing them to unauthorized users who have access to these logs. This could lead to unauthorized access to Kubernetes resources if the tokens are compromised. There is no indication of known exploits in the wild at this time.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat versions to 11.0.21, 10.1.54, or 9.0.117, where the issue is fixed. Since this is a software vulnerability, applying the official patch via upgrade is the recommended remediation. Patch status is confirmed by the vendor advisory recommending these versions. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-03-30T08:10:48.531Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d806d21cc7ad14da15a562
Added to database: 4/9/2026, 8:06:42 PM
Last enriched: 4/9/2026, 8:21:43 PM
Last updated: 4/10/2026, 8:31:22 AM
Views: 8
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