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Advisory severityLow3.7Red Hat Linux

Low [CVE-2026-53434] Error condition not handled when configuring CRLs

This low-severity Red Hat Linux advisory covers CVE-2026-53434 affecting Red Hat JBoss Web Server 7.0 on RHEL 10, Red Hat JBoss Web Server 7.0 on RHEL 8, Red Hat JBoss Web Server 7.0 on RHEL 9.

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CVE-2026-53434 Source published Source updated

VulniPulse record published Record updated

CVE-2026-53434
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

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. When configuring Certificate Revocation Lists (CRLs) for a FFM (presumably a specific type of connector), the system fails to detect and act upon an error condition.

This oversight could lead to unexpected behavior or a security bypass, as the intended security controls might not be properly enforced. When using the FFM-based connector with CRL-based certificate revocation checking, an error in CRL data processing is not handled correctly, potentially allowing revoked certificates to be accepted.

This only affects Tomcat 10.1.0-M7+ and 11.x using the FFM connector (Java 22+ Foreign Function & Memory API) with CRL configuration — an extremely narrow set of conditions not present in standard Red Hat deployments. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).

Weakness: CWE-390.

Affected products named by the advisory: Red Hat JBoss Web Server 7.0 on RHEL 10; Red Hat JBoss Web Server 7.0 on RHEL 8; Red Hat JBoss Web Server 7.0 on RHEL 9; Red Hat Hardened Images; and 10 more.

Affected versions
  • 11.0.0
  • 11.0.22
  • 10.1.0
  • 10.1.55
  • 9.0.83
  • 9.0.118

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Fixed versions
  • 11.0.23
  • 10.1.56
  • 9.0.119
  • jws7-tomcat-0:11.0.21-6.redhat_00005.1.el10jws
  • jws7-tomcat-0:11.0.21-6.redhat_00005.1.el8jws
  • jws7-tomcat-0:11.0.21-6.redhat_00005.1.el9jws
  • tomcat10-main-10.1.56-1.hum1
  • tomcat11-main-11.0.23-0.1.hum1
  • RHSA-2026:49951
  • RHSA-2026:29203
  • RHSA-2026:32960

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • This vulnerability only affects Tomcat deployments using the FFM-based connector (requires Java 22+) with CRL-based certificate revocation checking. Deployments using the standard NIO/NIO2 connectors or not using CRL checking are not affected.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

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