Apache Tomcat Improper Input Validation (v10-11.x)
CVE-2026-41293 Published on May 12, 2026
Apache Tomcat: HTTP/2 request headers not validated
Improper Input Validation 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 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27.
Older, end of support versions may also be affected.
Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-41293
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Affected Versions
Apache Software Foundation Apache Tomcat:- Version 11.0.0-M1, <= 11.0.21 is affected.
- Version 10.1.0-M1, <= 10.1.54 is affected.
- Version 9.0.0.M1, <= 9.0.117 is affected.
- Version 10.0.0-M1, <= 10.0.27 is affected.
- Version 8.5.0, <= 8.5.100 is affected.