CVE-2026-54526
Argo Workflows: ArtifactGC.PodSpecPatch bypasses Strict/Secure template reference allow-list (Incomplete fix for CVE-2026-31892)
Severity by source
Trivy's own label is CRITICAL. Rated critical by NVD, Bitnami. Rated lower by GHSA (high).
Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to 3.7.15 and 4.0.6, the allow-list fix for CVE-2026-31892 is incomplete because workflow/util/merge.go ValidateUserOverrides and SanitizeUserWorkflowSpec walk only the top-level fields of WorkflowSpec via reflection, and WorkflowSpec.ArtifactGC is allow-listed wholesale; the struct behind that field, WorkflowLevelArtifactGC, has a PodSpecPatch sub-field whose contents flow unmodified into util.ApplyPodSpecPatch on the artifact-GC pod, the same sink the original fix closed for WorkflowSpec.PodSpecPatch, so a user submitting a Workflow under templateReferencing: Strict or Secure (against a referenced WorkflowTemplate that declares an output artifact and setting spec.artifactGC.strategy: OnWorkflowCompletion) can still inject an arbitrary strategic merge patch into the artifact-GC pod, including hostPath volumes, privileged: true, arbitrary image and command, and hostNetwork: true, defeating the stated purpose of Strict/Secure reference mode. This issue is fixed in versions 3.7.15 and 4.0.6.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | argo-workflows | 3.7.15, 4.0.6 |
| chainguard | kubeflow-pipelines, kubeflow-pipelines-driver-fips, kubeflow-pipelines-fips | 2.17.2-r4 and 2 more |
| go::GitHub Security Advisory Go | github.com/argoproj/argo-workflows, github.com/argoproj/argo-workflows/v3, github.com/argoproj/argo-workflows/v4 | 3.7.15 and 1 more |
| minimos | argo-workflow-controller-3.7, argo-workflow-controller-4.0, argo-workflow-controller-fips-3.7 and 9 more | 3.7.15-r0 and 1 more |
| wolfi | kubeflow-pipelines | 2.17.2-r4 |
Show all 20 entries from 5 sources
| Source | Package | Fixed in |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | argo-workflows | 3.7.15, 4.0.6 |
| chainguard | kubeflow-pipelines | 2.17.2-r4 |
| chainguard | kubeflow-pipelines-driver-fips | 2.17.0-r5 |
| chainguard | kubeflow-pipelines-fips | 2.17.0-r9 |
| go::GitHub Security Advisory Go | github.com/argoproj/argo-workflows | no fix listed |
| go::GitHub Security Advisory Go | github.com/argoproj/argo-workflows/v3 | 3.7.15 |
| go::GitHub Security Advisory Go | github.com/argoproj/argo-workflows/v4 | 4.0.6 |
| minimos | argo-workflow-controller-3.7 | 3.7.15-r0 |
| minimos | argo-workflow-controller-4.0 | 4.0.6-r0 |
| minimos | argo-workflow-controller-fips-3.7 | 3.7.15-r0 |
| minimos | argo-workflow-controller-fips-4.0 | 4.0.6-r0 |
| minimos | argo-workflow-executor-3.7 | 3.7.15-r0 |
| minimos | argo-workflow-executor-4.0 | 4.0.6-r0 |
| minimos | argo-workflow-executor-fips-3.7 | 3.7.15-r0 |
| minimos | argo-workflow-executor-fips-4.0 | 4.0.6-r0 |
| minimos | argo-workflows-3.7 | 3.7.15-r0 |
| minimos | argo-workflows-4.0 | 4.0.6-r0 |
| minimos | argo-workflows-fips-3.7 | 3.7.15-r0 |
| minimos | argo-workflows-fips-4.0 | 4.0.6-r0 |
| wolfi | kubeflow-pipelines | 2.17.2-r4 |
References
- https://github.com/argoproj/argo-workflows
- https://github.com/argoproj/argo-workflows/commit/277e9cef0ad16d7eaaab253573d0695951a65dbd
- https://github.com/argoproj/argo-workflows/commit/358cc3968c8f06f1be0967e41df191088db0b662
- https://github.com/argoproj/argo-workflows/releases/tag/v3.7.15
- https://github.com/argoproj/argo-workflows/releases/tag/v4.0.6
- https://github.com/argoproj/argo-workflows/security/advisories/GHSA-48p8-g2fx-3wwm
- https://nvd.nist.gov/vuln/detail/CVE-2026-54526