High7.5Red Hat Linux

High [CVE-2026-4926] Denial of Service via crafted regular expressions

This high-severity Red Hat Linux advisory covers CVE-2026-4926 affecting Cryostat 4 on RHEL 9, Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9.

CVE-2026-4926 Published Mar 26, 2026

CVE-2026-4926

Affected products & platforms

Red Hat LinuxUnclassified

Open vendor advisory

Android app · Google Play

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

Denial of Service via crafted regular expressions. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-1333. Affected package(s): ansible-automation-platform, migration-toolkit-virtualization/mtv-console-plugin-rhel9:1779139872, cryostat/cryostat-openshift-console-plugin-rhel9:4.2.0, rhtas/rhtas-console-ui-rhel9:1776673130, rhdh/rhdh-hub-rhel9:1776784286, rhosdt/tempo-jaeger-query-rhel9:1776435608.

Resolved in Red Hat advisory RHSA-2026:13826 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; and 24 more.

Affected versions

ansible-automation-platform-26/gateway-rhel9:1779773804
migration-toolkit-virtualization/mtv-console-plugin-rhel9:1779139872
cryostat/cryostat-openshift-console-plugin-rhel9:4.2.0-9
rhtas/rhtas-console-ui-rhel9:1776673130
rhdh/rhdh-hub-rhel9:1776784286
rhosdt/tempo-jaeger-query-rhel9:1776435608
devspaces/code-rhel9:1776744110
devspaces/jetbrains-ide-rhel9:1776795400
rhdh/rhdh-hub-rhel9:1777903262
rhtas/rhtas-console-ui-rhel9:1776889929
automation-platform-ui-0:2.6.9-1.el9ap
automation-gateway-0:2.5.20260422-3.el8ap

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

Fixed versions

RHSA-2026:13826

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-2026:13826 (`sudo dnf update` / `yum update`).

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

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.