{"id":"CVE-2026-54526","aliases":["BIT-argo-workflows-2026-54526","GHSA-48p8-g2fx-3wwm","GO-2026-6223"],"url":"https://o3.security/vulnerability/CVE-2026-54526","summary":"Argo Workflows: Incomplete fix for CVE-2026-31892: ArtifactGC.PodSpecPatch bypass of Strict/Secure templateReferencing","details":"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.","published":"2026-07-16T19:07:30.804Z","modified":"2026-08-18T14:56:00.633429488Z","cvss":null,"epss":{"score":0.00363,"percentile":0.28999,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/argoproj/argo-workflows/v4","fixedVersion":"4.0.6"},{"ecosystem":"Go","name":"github.com/argoproj/argo-workflows/v3","fixedVersion":"3.7.15"},{"ecosystem":"Go","name":"github.com/argoproj/argo-workflows","fixedVersion":null}],"fix":{"url":"https://github.com/argoproj/argo-workflows/commit/277e9cef0ad16d7eaaab253573d0695951a65dbd","label":"argoproj/argo-workflows@277e9ce"},"references":[{"type":"WEB","url":"https://github.com/argoproj/argo-workflows/releases/tag/v3.7.15"},{"type":"WEB","url":"https://github.com/argoproj/argo-workflows/releases/tag/v4.0.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54526.json"},{"type":"ADVISORY","url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-48p8-g2fx-3wwm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54526"},{"type":"FIX","url":"https://github.com/argoproj/argo-workflows/commit/277e9cef0ad16d7eaaab253573d0695951a65dbd"},{"type":"FIX","url":"https://github.com/argoproj/argo-workflows/commit/358cc3968c8f06f1be0967e41df191088db0b662"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T14:56:00.633429488Z"}}