CVE-2026-41293 — Apache Tomcat: HTTP/2 request headers not validated

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Tomcat	affected 11.0.0-M1 through 11.0.21; affected 10.1.0-M1 through 10.1.54; affected 9.0.0.M1 through 9.0.117; affected 10.0.0-M1 through 10.0.27; affected 8.5.0 through 8.5.100

CWE

CWE-20

References

https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/05/12/13

CISA-ADP

No English description supplied.

No references supplied.