Improper Input Validation Vulnerability in Apache Tomcat by Apache
CVE-2026-41293

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Tomcat
Vendor
CVE Published:
12 May 2026

What is CVE-2026-41293?

An improper input validation vulnerability has been identified in Apache Tomcat, affecting various versions across different branches. This flaw allows for potentially malicious input to be processed, which could lead to unintended behaviors or security issues. It is crucial for users running affected versions to upgrade to the latest releases to ensure their systems are secure and resilient against potential exploits.

Affected Version(s)

Apache Tomcat 11.0.0-M1 <= 11.0.21

Apache Tomcat 10.1.0-M1 <= 10.1.54

Apache Tomcat 9.0.0.M1 <= 9.0.117

References

https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll55...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dawit Jeong (@dawitngoliath)
.