Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 3.6.5 to 4.0.4, an unchecked array index in the pod informer's podGCFromPod() function causes a controller-wide panic when a workflow pod carries a malformed workflows.argoproj.io/pod-gc-strategy annotation. Because the panic occurs inside an informer goroutine (outside the controller's recover() scope), it crashes the entire controller process. The poisoned pod persists across restarts, causing a crash loop that halts all workflow processing until the pod is manually deleted. This vulnerability is fixed in 4.0.5 and 3.7.14.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| argoproj | argo-workflows | >= 4.0.0, < 4.0.5, >= 3.7.0, < 3.7.14, >= 3.6.5, <= 3.6.19 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | argo-workflows-3.7 +1 | 3.7.15-r2 | — |
| Wolfi rolling | kubeflow-pipelines-apiserver +3 | 2.16.0-r18 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/argoproj/argo-workflows | all versions | — | GO-2026-5148 |
| Go | github.com/argoproj/argo-workflows/v2 | all versions | — | GO-2026-5148 |
| Go | github.com/argoproj/argo-workflows/v3 | >= 3.7.0, < 3.7.14 | 3.7.14 | GHSA-5jv8-h7qh-rf5p |
| Go | github.com/argoproj/argo-workflows/v3 | >= 3.6.5, <= 3.6.19 | — | GHSA-5jv8-h7qh-rf5p |
| Go | github.com/argoproj/argo-workflows/v3 | >= 3.6.5 | — | GO-2026-5148 |
| Go | github.com/argoproj/argo-workflows/v4 | >= 4.0.0, < 4.0.5 | 4.0.5 | GHSA-5jv8-h7qh-rf5p |
Advisories 1
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026