{"id":"BIT-argo-workflows-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.","aliases":["CVE-2026-54526","GHSA-48p8-g2fx-3wwm","GO-2026-6223"],"modified":"2026-09-10T16:01:08.823054993Z","published":"2026-07-27T05:36:56.472Z","database_specific":{"severity":"Critical","cpes":["cpe:2.3:a:argo_workflows_project:argo_workflows:*:*:*:*:*:kubernetes:*:*"]},"references":[{"type":"FIX","url":"https://github.com/argoproj/argo-workflows/commit/277e9cef0ad16d7eaaab253573d0695951a65dbd"},{"type":"FIX","url":"https://github.com/argoproj/argo-workflows/commit/358cc3968c8f06f1be0967e41df191088db0b662"},{"type":"ARTICLE","url":"https://github.com/argoproj/argo-workflows/releases/tag/v3.7.15"},{"type":"ARTICLE","url":"https://github.com/argoproj/argo-workflows/releases/tag/v4.0.6"},{"type":"ADVISORY","url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-48p8-g2fx-3wwm"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54526"}],"affected":[{"package":{"name":"argo-workflows","ecosystem":"Bitnami","purl":"pkg:bitnami/argo-workflows"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.7.15"},{"introduced":"4.0.0"},{"fixed":"4.0.6"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/argo-workflows/BIT-argo-workflows-2026-54526.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}