This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0-M1 through 9.0.112.
The following versions were EOL at the time the CVE was created but are
known to be affected: 8.5.0 through 8.5.100. Older EOL versions are not affected.
Tomcat did not validate that the host name provided via the SNI
extension was the same as the host name provided in the HTTP host header
field. If Tomcat was configured with more than one virtual host and the
TLS configuration for one of those hosts did not require client
certificate authentication but another one did, it was possible for a
client to bypass the client certificate authentication by sending
different host names in the SNI extension and the HTTP host header field.
The vulnerability only applies if client certificate authentication is
only enforced at the Connector. It does not apply if client certificate
authentication is enforced at the web application.
Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fix the issue.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | unaffected |
|
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Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 18 Feb 2026 11:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Apache
Apache tomcat Apache Tomcat Apache Tomcat apache Tomcat |
|
| Vendors & Products |
Apache
Apache tomcat Apache Tomcat Apache Tomcat apache Tomcat |
Tue, 17 Feb 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Improper Input Validation vulnerability. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0-M1 through 9.0.112. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Older EOL versions are not affected. Tomcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one of those hosts did not require client certificate authentication but another one did, it was possible for a client to bypass the client certificate authentication by sending different host names in the SNI extension and the HTTP host header field. The vulnerability only applies if client certificate authentication is only enforced at the Connector. It does not apply if client certificate authentication is enforced at the web application. Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fix the issue. | |
| Title | Apache Tomcat: Client certificate verification bypass due to virtual host mapping | |
| Weaknesses | CWE-20 | |
| References |
|
Projects
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MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-02-17T18:48:30.577Z
Reserved: 2025-12-05T11:54:31.778Z
Link: CVE-2025-66614
Vulnrichment
No data.
NVD
Status : Awaiting Analysis
Published: 2026-02-17T19:21:55.310
Modified: 2026-02-18T17:51:53.510
Link: CVE-2025-66614
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-02-18T10:33:46Z