Vulnerability Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 2.9.0 to before 4.0.2 and 3.7.11, A user who can submit Workflows can completely bypass all security settings defined in a WorkflowTemplate by including a podSpecPatch field in their Workflow submission. This works even when the controller is configured with templateReferencing: Strict, which is specifically documented as a mechanism to restrict users to admin-approved templates. The podSpecPatch field on a submitted Workflow takes precedence over the referenced WorkflowTemplate during spec merging and is applied directly to the pod spec at creation time with no security validation. This vulnerability is fixed in 4.0.2 and 3.7.11.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Argoproj | Argo Workflows | >= 2.9.0, < 3.7.11 |
Related Weaknesses (CWE)
References
- https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3wf5-g532-rcExploitMitigationVendor Advisory
FAQ
What is CVE-2026-31892?
CVE-2026-31892 is a vulnerability with a CVSS score of 8.1 (HIGH). Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 2.9.0 to before 4.0.2 and 3.7.11, A user who can submit Workflows can completely b...
How severe is CVE-2026-31892?
CVE-2026-31892 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31892?
Check the references section above for vendor advisories and patch information. Affected products include: Argoproj Argo Workflows.