CVE-2026-28229 Argo Workflows has unauthorized access to Argo Workflows Template
Attackers can retrieve sensitive WorkflowTemplate content, including secrets, by sending requests with a dummy bearer token due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-28229?
CVE-2026-28229 is a critical missing authorization vulnerability in argoproj argo-workflows, published on 11 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to 4.0.2 and 3.7.11, Workflow templates endpoints allow any client to retrieve WorkflowTemplates (and ClusterWorkflowTemplates). Any request with a Authorization: Bearer nothing token can leak sensitive template content, including embedded Secret manifests. This vulnerability is fixed in 4.0.2 and 3.7.11.
Which versions are affected by CVE-2026-28229?
9 open source packages ship an affected version, including github.com/argoproj/argo-workflows/v3, argo-workflows and github.com/argoproj/argo-workflows. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/argoproj/argo-workflows/v3 Go | All versions | 3.7.11 |
github.com/argoproj/argo-workflows/v3 Go | From 3.7.0 | 3.7.11 |
github.com/argoproj/argo-workflows/v3 Go | From 3.7.0 | 3.7.11 |
argo-workflows Bitnami | All versions | 3.7.11, 4.0.2 |
github.com/argoproj/argo-workflows Go | All versions | None |
github.com/argoproj/argo-workflows/v2 Go | All versions | None |
3 more packages
github.com/argoproj/argo-workflows/v4 Go | All versions | 4.0.2 |
github.com/argoproj/argo-workflows/v4 Go | All versions | 4.0.2 |
github.com/argoproj/argo-workflows/v4 Go | All versions | 4.0.2 |
Products include Argoproj Argo Workflows.
How do I fix CVE-2026-28229?
Upgrade github.com/argoproj/argo-workflows/v3 to 3.7.11 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-28229 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-28229 exists.
Other vulnerabilities in argoproj argo-workflows
- CVE-2026-54526 Argo Workflows: Incomplete fix for CVE-2026-31892: ArtifactGC.PodSpecPatch bypass of Strict/Secure templateReferencing
- CVE-2026-31892 WorkflowTemplate Security Bypass via podSpecPatch in Strict/Secure Reference Mode
- CVE-2026-42295 Argo Workflows: Exposure of artifact repository credentials
- CVE-2026-42297 Argo Workflows Is Missing Authorization in Sync ConfigMap Provider
- CVE-2025-62157 Argo Workflows exposes artifact repository credentials in workflow-controller logs
Sources
Also known as BIT-argo-workflows-2026-28229, ECHO-a921-375a-81f1, GHSA-56px-hm34-xqj5, GO-2026-4678, MINI-6mc8-xg5c-629r, MINI-7x9c-rh86-j8m9 and 7 more.