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Advisory severityHigh7.5Red Hat Linux

High [CVE-2026-5588] PKIX draft CompositeVerifier accepts empty signature sequence as valid

This high-severity Red Hat Linux advisory covers CVE-2026-5588 affecting Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8, Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9, Red Hat OpenShift Dev Spaces 3.28.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-5588 Source published

VulniPulse record published

CVE-2026-5588
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

PKIX draft CompositeVerifier accepts empty signature sequence as valid. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-347. Affected package(s): eap8-bouncycastle, devspaces/openvsx-rhel9:1779528224, eap8-guava-failureaccess, eap8-activemq-artemis, eap8-netty-transport-native-epoll, eap8-reactivex-rxjava.

Resolved in Red Hat advisory RHSA-2026:14276 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9; Red Hat OpenShift Dev Spaces 3.28; Red Hat build of Apache Camel 4 for Quarkus 3; and 22 more.

Affected versions
  • eap8-bouncycastle-0:1.84.0-1.redhat_00001.1.el8eap
  • devspaces/openvsx-rhel9:1779528224
  • eap8-guava-failureaccess-0:1.0.3-1.redhat_00001.1.el9eap
  • eap8-activemq-artemis-0:2.40.0-6.redhat_00012.1.el9eap
  • eap8-netty-transport-native-epoll-0:4.1.132-1.Final_redhat_00001.1.el9eap
  • eap8-reactivex-rxjava-0:3.1.12-1.redhat_00001.1.el9eap
  • eap8-wildfly-openssl-0:2.3.0-1.Final_redhat_00001.1.el9eap
  • bcpkix-jdk15to18
  • eap8-jboss-metadata-0:16.1.0-1.Final_redhat_00001.1.el9eap
  • eap8-angus-0:2.0.5-1.redhat_00001.1.el9eap
  • eap8-plexus-utils-0:3.6.1-1.redhat_00001.1.el9eap
  • bcpkix-fips

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions
  • RHSA-2026:14276

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:14276 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Discussion(0)

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