CVE-2026-25854 (Medium) detected in tomcat-embed-core-9.0.34.jar

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CVE-2026-25854 - Medium Severity Vulnerability

Vulnerable Library - tomcat-embed-core-9.0.34.jar

Core Tomcat implementation

Library home page: https://tomcat.apache.org/

Path to dependency file: /dd-smoke-tests/springboot-openliberty/application/pom.xml

Path to vulnerable library: /home/wss-scanner/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.34/tomcat-embed-core-9.0.34.jar

Dependency Hierarchy:

• spring-boot-starter-web-2.2.7.RELEASE.jar (Root Library)
  • spring-boot-starter-tomcat-2.2.7.RELEASE.jar
    • ❌ tomcat-embed-core-9.0.34.jar (Vulnerable Library)

Found in HEAD commit: 2819174635979a19573ec0ce8e3e2b63a3848079

Found in base branch: master

Vulnerability Details

Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100.
Other, unsupported versions may also be affected
Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.

Publish Date: 2026-04-09

URL: CVE-2026-25854

CVSS 3 Score Details (6.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-04-09

Fix Resolution (org.apache.tomcat.embed:tomcat-embed-core): 9.0.116

Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-web): 3.0.0

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