Medium5.4Vendor: LowRed Hat Linux

Medium [CVE-2026-34483] Information disclosure due to improper encoding in JsonAccessLogValve

This medium-severity Red Hat Linux advisory covers CVE-2026-34483 affecting Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

CVE-2026-34483 Published Apr 9, 2026

CVE-2026-34483

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Information disclosure due to improper encoding in JsonAccessLogValve. Red Hat rates this low (CVSS 5.4).

Weakness: CWE-838. Affected package(s): tomcat, jws6-tomcat.

Resolved in Red Hat advisory RHSA-2026:20405 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.

Affected versions

tomcat
jws6-tomcat-0:10.1.49-13.redhat_00011.1.el10jws
jws6-tomcat-0:10.1.49-13.redhat_00011.1.el8jws
jws6-tomcat-0:10.1.49-13.redhat_00011.1.el9jws

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:20405

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:20405 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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