Tomcat8: Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.
An open redirect vulnerability exists in Apache Tomcat via the LoadBalancerDrainingValve, causing occasional URL redirection to untrusted sites. This affects multiple versions of Apache Tomcat from 8.5.30 through 8.5.100, 9.0.0.M23 through 9.0.115, 10.1.0-M1 through 10.1.52, and 11.0.0-M1 through 11.0.18. Users are advised to upgrade to fixed versions 11.0.20, 10.1.53, or 9.0.116 to remediate the issue. The vulnerability has a medium severity rating and no known exploits in the wild have been reported.
AI Analysis
Technical Summary
This vulnerability in Apache Tomcat involves an occasional open redirect via the LoadBalancerDrainingValve component. Affected versions include 8.5.30 through 8.5.100, 9.0.0.M23 through 9.0.115, 10.1.0-M1 through 10.1.52, and 11.0.0-M1 through 11.0.18. The issue allows redirection of URLs to untrusted external sites, which could be leveraged in phishing or other social engineering attacks. The vendor has released fixed versions 11.0.20, 10.1.53, and 9.0.116 that address this vulnerability.
Potential Impact
The vulnerability allows an attacker to cause occasional URL redirection to untrusted sites via the LoadBalancerDrainingValve in affected Apache Tomcat versions. This can lead to user redirection to malicious sites, potentially facilitating phishing or other social engineering attacks. The impact includes limited confidentiality and integrity loss but no availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.20, 10.1.53, or 9.0.116 or later, which contain fixes for this vulnerability. Applying these official fixes fully mitigates the issue. No additional mitigations are specified or required by the vendor advisory.
Tomcat8: Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.
Description
An open redirect vulnerability exists in Apache Tomcat via the LoadBalancerDrainingValve, causing occasional URL redirection to untrusted sites. This affects multiple versions of Apache Tomcat from 8.5.30 through 8.5.100, 9.0.0.M23 through 9.0.115, 10.1.0-M1 through 10.1.52, and 11.0.0-M1 through 11.0.18. Users are advised to upgrade to fixed versions 11.0.20, 10.1.53, or 9.0.116 to remediate the issue. The vulnerability has a medium severity rating and no known exploits in the wild have been reported.
CVSS v3.1
Score 6.1medium
Affected software
pkg:deb/ubuntu/[email protected]~18.04.3+esm6?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+esm8?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+esm4?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]~esm4?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]~26.04.1?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]~26.04.1?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]~26.04.1?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache Tomcat involves an occasional open redirect via the LoadBalancerDrainingValve component. Affected versions include 8.5.30 through 8.5.100, 9.0.0.M23 through 9.0.115, 10.1.0-M1 through 10.1.52, and 11.0.0-M1 through 11.0.18. The issue allows redirection of URLs to untrusted external sites, which could be leveraged in phishing or other social engineering attacks. The vendor has released fixed versions 11.0.20, 10.1.53, and 9.0.116 that address this vulnerability.
Potential Impact
The vulnerability allows an attacker to cause occasional URL redirection to untrusted sites via the LoadBalancerDrainingValve in affected Apache Tomcat versions. This can lead to user redirection to malicious sites, potentially facilitating phishing or other social engineering attacks. The impact includes limited confidentiality and integrity loss but no availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.20, 10.1.53, or 9.0.116 or later, which contain fixes for this vulnerability. Applying these official fixes fully mitigates the issue. No additional mitigations are specified or required by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-25854
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 3.1
Threat ID: 6a58b4dc68715ace43dae4c7
Added to database: 07/16/2026, 10:39:24 UTC
Last enriched: 07/30/2026, 11:21:56 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 9
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