CVE-2026-25854: CWE-601 URL Redirection to Untrusted Site ('Open Redirect') in Apache Software Foundation Apache Tomcat
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-25854) in Apache Tomcat involves an open redirect via the LoadBalancerDrainingValve, which can cause occasional URL redirection to untrusted sites. It affects Apache Tomcat versions from 11.0.0-M1 through 11.0.18, 10.1.0-M1 through 10.1.52, 9.0.0.M23 through 9.0.115, and 8.5.30 through 8.5.100. The vulnerability is classified under CWE-601. The vendor recommends upgrading to Apache Tomcat versions 11.0.20, 10.1.53, or 9.0.116 where the issue is fixed.
Potential Impact
The vulnerability allows an attacker to cause a user to be redirected to an untrusted external site, which can lead to phishing or other social engineering attacks. The CVSS score of 6.1 indicates a medium severity impact with low confidentiality and integrity impact and no availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available by upgrading Apache Tomcat to versions 11.0.20, 10.1.53, or 9.0.116 as recommended by the vendor. Users should apply these updates to remediate the open redirect vulnerability. No additional mitigation guidance is provided or required beyond applying the official fix.
CVE-2026-25854: CWE-601 URL Redirection to Untrusted Site ('Open Redirect') in Apache Software Foundation Apache Tomcat
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-25854) in Apache Tomcat involves an open redirect via the LoadBalancerDrainingValve, which can cause occasional URL redirection to untrusted sites. It affects Apache Tomcat versions from 11.0.0-M1 through 11.0.18, 10.1.0-M1 through 10.1.52, 9.0.0.M23 through 9.0.115, and 8.5.30 through 8.5.100. The vulnerability is classified under CWE-601. The vendor recommends upgrading to Apache Tomcat versions 11.0.20, 10.1.53, or 9.0.116 where the issue is fixed.
Potential Impact
The vulnerability allows an attacker to cause a user to be redirected to an untrusted external site, which can lead to phishing or other social engineering attacks. The CVSS score of 6.1 indicates a medium severity impact with low confidentiality and integrity impact and no availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available by upgrading Apache Tomcat to versions 11.0.20, 10.1.53, or 9.0.116 as recommended by the vendor. Users should apply these updates to remediate the open redirect vulnerability. No additional mitigation guidance is provided or required beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-02-06T16:25:11.569Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d7ff941cc7ad14da10e9c5
Added to database: 4/9/2026, 7:35:48 PM
Last enriched: 4/17/2026, 12:18:13 PM
Last updated: 5/25/2026, 3:29:27 AM
Views: 107
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