CVE-2026-42296
8.1 · HIGHOverview
CVE-2026-42296 is a high-severity vulnerability affecting argoproj argo_workflows. It was published on May 9, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.7.14 and 4.0.5, a user with create Workflow permission can bypass templateReferencing: Strict to get host network access, switch service accounts, override pod security context, add tolerations to schedule on control-plane nodes, or enable SA token mounting. This defeats the stated purpose of the feature. The practical impact depends on what Kubernetes-level controls are in place. Clusters with PodSecurity admission or OPA/Gatekeeper would independently block some of these (like hostNetwork). Clusters that rely on Argo's Strict mode as the primary enforcement layer are fully exposed. This issue has been patched in versions 3.7.14 and 4.0.5.
Remediation
Check the references section for vendor advisories and patches from argoproj. Update argo_workflows to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| argoproj | argo_workflows | >= 0, < 3.7.14 | Affected |
References
Frequently Asked Questions
What is CVE-2026-42296?
CVE-2026-42296 is a high-severity vulnerability affecting argoproj argo_workflows. It was published on May 9, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-42296?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-42296?
Check the references section for vendor advisories and patches from argoproj. Update argo_workflows to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-42296?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-42296 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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