CVE-2026-42498
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
- Apache Tomcat, Confluence, Linuxmint, Red Os, Ubuntu
- Apache Tomcat
- ≤ 7.0.109, 8.5.100, 9.0.118, 10.1.55, 11.0.22
- Fix
- Available
- CVSS 3.1
- 7.3 HIGH
- EPSS
- 0.6% (45th percentile)
- Weakness
- CWE-200
- NVD status
- Analyzed
- Published
- 2026-05-12
CVE-2026-42498 at NVD
No indexed exploits for CVE-2026-42498 yet
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No exploit for CVE-2026-42498 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.