High7.5Red Hat Linux

High [CVE-2026-5598] private key leakage via non-constant time comparisons

This high-severity Red Hat Linux advisory covers CVE-2026-5598 affecting Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7, Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8, Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9.

CVE-2026-5598 Published Apr 15, 2026

CVE-2026-5598

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

private key leakage via non-constant time comparisons. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-385. Affected package(s): eap8-bouncycastle, bcprov-jdk12, eap7-bouncycastle.

Resolved in Red Hat advisory RHSA-2026:18054 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8; and 2 more.

Affected versions

eap8-bouncycastle-0:1.84.0-1.redhat_00001.1.el8eap
bcprov-jdk12
eap8-bouncycastle-0:1.84.0-1.redhat_00001.1.el9eap
eap7-bouncycastle-0:1.84.0-1.redhat_00001.1.el9eap
eap7-bouncycastle-0:1.84.0-1.redhat_00001.1.el7eap
eap7-bouncycastle-0:1.84.0-1.redhat_00001.1.el8eap

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

Fixed versions

RHSA-2026:18054

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-2026:18054 (`sudo dnf update` / `yum update`).

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

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