CVE-2026-25854
Published:April 09, 2026
Updated:April 20, 2026
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.
Affected Packages
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=10.1.0-M1 <10.1.53Fix Suggestion:
Update to version 10.1.53https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=9.0.0-M23 <9.0.116Fix Suggestion:
Update to version 9.0.116https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=11.0.0-M1 <11.0.20Fix Suggestion:
Update to version 11.0.20org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.20Fix Suggestion:
Update to version 11.0.20org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=9.0.0.M25 <9.0.116Fix Suggestion:
Update to version 9.0.116org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=8.5.30 <9.0.116Fix Suggestion:
Update to version 9.0.116org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=9.0.0.M25 <9.0.116Fix Suggestion:
Update to version 9.0.116org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.53Fix Suggestion:
Update to version 10.1.53org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=11.0.0-M1 <11.0.20Fix Suggestion:
Update to version 11.0.20org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=10.1.0-M1 <10.1.53Fix Suggestion:
Update to version 10.1.53org.apache.tomcat:tomcat-catalina (JAVA):
Affected version(s) >=8.5.30 <9.0.116Fix Suggestion:
Update to version 9.0.116Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
URL Redirection to Untrusted Site ('Open Redirect')
EPSS
Base Score:
0.01
