GHSA-x4m4-345f-5h5g BIT-tomcat-2026-34487 CVE-2026-34487
Apache Tomcat vulnerable to Insertion of Sensitive Information into Log File
High
Maven
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.45%
- Chance of exploitation in the next 30 days. Higher than 38.91% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-532 Insertion of Sensitive Information into Log File
- Fix
- Available
- 3 packages have a fixed version
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.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.apache.tomcat.embed:tomcat-embed-core | >= 9.0.13, < 9.0.117 |
9.0.117 |
| org.apache.tomcat.embed:tomcat-embed-core | >= 10.1.0-M1, < 10.1.54 |
10.1.54 |
| org.apache.tomcat.embed:tomcat-embed-core | >= 11.0.0-M1, < 11.0.21 |
11.0.21 |
| org.apache.tomcat:tomcat | >= 9.0.13, < 9.0.117 |
9.0.117 |
| org.apache.tomcat:tomcat | >= 10.1.0-M1, < 10.1.54 |
10.1.54 |
| org.apache.tomcat:tomcat | >= 11.0.0-M1, < 11.0.21 |
11.0.21 |
| org.apache.tomcat:tomcat-tribes | >= 9.0.13, < 9.0.117 |
9.0.117 |
| org.apache.tomcat:tomcat-tribes | >= 10.1.0-M1, < 10.1.54 |
10.1.54 |
| org.apache.tomcat:tomcat-tribes | >= 11.0.0-M1, < 11.0.21 |
11.0.21 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.apache.tomcat.embed:tomcat-embed-core Maven → 9.0.117
- maven
<dependency><groupId>org.apache.tomcat.embed</groupId><artifactId>tomcat-embed-core</artifactId><version>9.0.117</version></dependency>- gradle
implementation("org.apache.tomcat.embed:tomcat-embed-core:9.0.117")
org.apache.tomcat:tomcat Maven → 9.0.117
- maven
<dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat</artifactId><version>9.0.117</version></dependency>- gradle
implementation("org.apache.tomcat:tomcat:9.0.117")
org.apache.tomcat:tomcat-tribes Maven → 9.0.117
- maven
<dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat-tribes</artifactId><version>9.0.117</version></dependency>- gradle
implementation("org.apache.tomcat:tomcat-tribes:9.0.117")
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Weakness
CWE-532: Insertion of Sensitive Information into Log File
The product writes sensitive information to a log file.
How to prevent it
- Architecture and Design, Implementation: Consider seriously the sensitivity of the information written into log files. Do not write secrets into the log files.
- Distribution: Remove debug log files before deploying the application into production.
- Operation: Protect log files against unauthorized read/write.
- Implementation: Adjust configurations appropriately when software is transitioned from a debug state to production.
References
Advisories
Packages
Other links
- github.com/apache/tomcat/commit/301bc6efbf72feb14dacfdfa3f50372182736150
- github.com/apache/tomcat/commit/5eff2a773b8b728083e5195b3183df1b9e12a03d
- github.com/apache/tomcat/commit/f593292a082e5ef9336a8db2b4b522f7f3e36976
- lists.apache.org/thread/4xpkwolpkrj8v5xzp5nyovtlqp3y850h
- tomcat.apache.org/security-10.html
- tomcat.apache.org/security-11.html
- tomcat.apache.org/security-9.html
- openwall.com/lists/oss-security/2026/04/09/28
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-69r9-qgr7-g2wj Apache Tomcat Missing Encryption of Sensitive Data vulnerability | High Known exploited | Also affects org.apache.tomcat:tomcat |
| GHSA-83qj-6fr2-vhqg Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT | Critical Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-qppj-fm5r-hxr3 HTTP/2 Stream Cancellation Attack | Medium Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-xjgh-84hx-56c5 Unrestricted Upload of File with Dangerous Type Apache Tomcat | High Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| CVE-2020-1938 Improper Privilege Management in Tomcat | Critical Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-pjfr-qf3p-3q25 When running Apache Tomcat on Windows with HTTP PUTs enabled it was possible to upload a JSP file to the server | High Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-h3x4-894j-xpx5 Apache Tomcat's FORM authentication process has an Incorrect Authorization vulnerability | Critical | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-9xv2-5v5q-p794 Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability | Critical | Also affects org.apache.tomcat.embed:tomcat-embed-core |
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