CVE-2026-41293 Details
Description
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.
A vulnerability exists in Apache Tomcat in versions 11.0.0-M1 prior to 11.0.21, 10.1.0-M1 prior to 10.1.54, 9.0.0-M1 prior to 9.0.117, and 10.0.0-M1 prior to 10.0.27. Older, unsupported versions may also be affected. The issue arises from improper validation of HTTP/2 request headers, which could lead to unexpected application behavior if the application assumed that header values exposed through the Servlet API were compliant with the specification.
Users should upgrade to Apache Tomcat 11.0.22 or later, 10.1.55 or later, or 9.0.118 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 14, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/05/12/13 | CVE | Mailing ListThird Party Advisory |
| https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r | [email protected] | Mailing ListVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache tomcat | >= 8.5.0, <= 8.5.100 >= 9.0.0, < 9.0.118 >= 10.0.0, <= 10.0.27 >= 10.1.0, < 10.1.55 >= 11.0.0, < 11.0.22 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 14, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | CVE Modified | CVE |
| May 12, 2026 | New CVE Received | [email protected] |