CVE-2026-53434
Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
9.1
CRITICAL
CVSS 3.1
EPSS 0.37%
Description
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0 through 11.0.22, from 10.1.0 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.
How to fix CVE-2026-53434
To remediate CVE-2026-53434, upgrade the affected package to a fixed version below.
- —upgrade to 9.0.101 or later
Is CVE-2026-53434 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 9.0.101, >= 10.1.0, < 10.1.37, >= 11.0.0, < 11.0.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |