REDHAT-BUG-2440426: Input Validation

Published Feb 17, 2026
·
Updated

Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat.

When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed.

This issue affects Apache Tomcat Native: from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat: from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114.

The following versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected.

Apache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue.

Apache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.

Affected Software

2 affected components
Apache Tomcat Native>=1.3.0<=1.3.4, >=2.0.0<=2.0.11, >=1.1.23<=1.1.34, >=1.2.0<=1.2.39
Apache Tomcat>=11.0.0-M1<=11.0.17, >=10.1.0-M7<=10.1.51, >=9.0.83<=9.0.114

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Apache Tomcat Native to a version that resolves this vulnerability.

    Fixed in 1.3.5
  2. Upgrade

    Upgrade Apache Tomcat Native to a version that resolves this vulnerability.

    Fixed in 2.0.12
  3. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 11.0.18
  4. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 10.1.52
  5. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.115

Event History

Feb 17, 2026
Data Sourced
via Red Hat·08:04 PM
DescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2440426?

The severity of REDHAT-BUG-2440426 is high due to improper input validation which can allow certificate revocation to be bypassed.

2

How do I fix REDHAT-BUG-2440426?

To fix REDHAT-BUG-2440426, upgrade to a patched version of Apache Tomcat Native or Apache Tomcat that addresses this vulnerability.

3

Which versions are affected by REDHAT-BUG-2440426?

Affected versions include Apache Tomcat Native versions from 1.1.23 to 1.3.4, and Apache Tomcat versions from 9.0.83 to 11.0.17.

4

What systems are impacted by REDHAT-BUG-2440426?

Systems running Apache Tomcat Native or Apache Tomcat in the affected versions are impacted by REDHAT-BUG-2440426.

5

Is there a workaround for REDHAT-BUG-2440426?

Currently, there are no known workarounds for REDHAT-BUG-2440426; upgrading to a secure version is the recommended solution.

Contact

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