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HighVulnerabilityupdated 26 Oct 2026, 13:05 UTC

Red Hat OpenShift: logged-in attacker can run code and read data

Someone with a valid login to OpenShift could run their own program on the system and see information they should not have. The attacker must already have an account, so it is not an open-to-anyone attack.

Official source
SeverityHighVulnerability
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official sourceBacked by an official source

What happened

Red Hat OpenShift has a vulnerability allowing a remote, authenticated attacker to execute arbitrary code and disclose information. A separate, medium-rated flaw in OpenShift Builds allows bypassing security controls.

Why it is dangerous: An attacker with any valid account could take control of workloads on the platform and access data they are not authorised to see. Shared clusters with many users or contractors carry the most risk.

Are you affected?

You are affected if you run Red Hat OpenShift with user accounts that can log in to the platform, including OpenShift Builds components.

What to do

  1. Check the Red Hat security advisory for the affected OpenShift and OpenShift Builds versions in your environment
  2. Apply the vendor-provided update as soon as it is available for your version
  3. Review user accounts and remove any that are unneeded until patching is complete

Timeline

  1. 26 Oct 2026, 07:54 UTC
    Publicly disclosed
  2. 26 Oct 2026, 07:54 UTC
    Reported by CERT-Bund (BSI) · CERT-Bund (BSI)
  3. 26 Oct 2026, 07:57 UTC
    Picked up by Zero Radar
  4. 26 Oct 2026, 12:59 UTC
    Reported by CERT-Bund (BSI) · CERT-Bund (BSI)

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
ZR-4f65f006
Disclosed
26 Oct 2026, 07:54 UTC
On Zero Radar
26 Oct 2026, 07:57 UTC (3 min after disclosure)
Last change
26 Oct 2026, 13:05 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Red Hat OpenShift: logged-in attacker can run code and read data · Zero Radar