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CVE-2026-25854 Moderate

Apache Tomcat: Occasionally open redirect

Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0 through 11.0.18, from 10.1.0 through 10.1.52, from 9.0.0 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.

Exploit probability 0.5%
Published April 13, 2026
Required by Not available
Last source change April 13, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

5 explicit affected versions

Bitnami tomcat
Maven org.apache.tomcat.embed:tomcat-embed-core

276 explicit affected versions

Maven org.apache.tomcat:tomcat

276 explicit affected versions

Maven org.apache.tomcat:tomcat-catalina

276 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities GHSA-9m3c-qcxr-9x87

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.

View original source
Open Source Vulnerabilities BIT-tomcat-2026-25854

Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0 through 11.0.18, from 10.1.0 through 10.1.52, from 9.0.0 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.

View original source
Open Source Vulnerabilities CVE-2026-25854

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.

View original source

05 / REFERENCES

Further evidence