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High8.5Red Hat Linux

High [CVE-2026-40938] Arbitrary code execution and secret exfiltration via malicious git commands

This high-severity Red Hat Linux advisory covers CVE-2026-40938 affecting Red Hat OpenShift Builds 1.7.4, Red Hat OpenShift Builds 1.8.0, Red Hat OpenShift Pipelines 1.21.

CVE-2026-40938 Published Apr 21, 2026
CVE-2026-40938
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Arbitrary code execution and secret exfiltration via malicious git commands. Red Hat rates this important (CVSS 8.5).

Weakness: CWE-88.

Affected package(s): openshift-pipelines/pipelines-rhel9-operator:1780645012, serve-tkn-cli, openshift-builds/openshift-builds-image-processing-rhel9:1778682932, openshift-builds/openshift-builds-image-processing-rhel9:1780373835, openshift-builds/openshift-builds-git-cloner-rhel9:1780374151, openshift-builds/openshift-builds-image-bundler-rhel9:1780373867.

Resolved in Red Hat advisory RHSA-2026:24484 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat OpenShift Builds 1.7.4; Red Hat OpenShift Builds 1.8.0; Red Hat OpenShift Pipelines 1.21; Red Hat OpenShift Builds 1.7.1; and 2 more.

Affected versions
  • openshift-pipelines/pipelines-rhel9-operator:1780645012
  • serve-tkn-cli-1-21-serve-tkn-cli-1.21.1
  • openshift-builds/openshift-builds-image-processing-rhel9:1778682932
  • openshift-builds/openshift-builds-image-processing-rhel9:1780373835
  • openshift-builds/openshift-builds-git-cloner-rhel9:1780374151
  • openshift-builds/openshift-builds-image-bundler-rhel9:1780373867
  • openshift-builds/openshift-builds-webhook-rhel9:1778682920
  • openshift-builds/openshift-builds-image-bundler-rhel9:1778683436
  • openshift-pipelines/pipelines-operator-bundle:1781686494
  • openshift-builds/openshift-builds-webhook-rhel9:1780374084
  • openshift-builds/openshift-builds-controller-rhel9:1780373846
  • openshift-builds/openshift-builds-controller-rhel9:1778683229

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

Fixed versions
  • RHSA-2026:24484

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-2026:24484 (`sudo dnf update` / `yum update`).

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

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