Critical severity · published Jun 29, 2026
CVE-2026-53434
Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
9.1
CVSS
0.6%
EPSS
No
On KEV
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-M1 through 11.0.22, from 10.1.0-M7 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
11.0.0-M1 through 11.0.22; 10.1.0-M7 through 10.1.55; 9.0.83 through 9.0.118 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53434
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-53434
Vendor Advisory
https://lists.apache.org/thread/x510lbq0sfrd1qyo7q3r1mpllgpdcosk
Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/06/29/22
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