Tracker / CVE-2026-42498
CVE-2026-42498
High 7.3
Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.
Affected products and versions
| apache | tomcat · 10.1.0 → 10.1.55 |
|---|---|
| apache | tomcat · 11.0.0 → 11.0.22 |
| apache | tomcat · 7.0.0 → 7.0.109 |
| apache | tomcat · 8.5.0 → 8.5.100 |
| apache | tomcat · 9.0.0 → 9.0.118 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.