{"id":"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.","aliases":["BIT-argo-workflows-2026-54526","GHSA-48p8-g2fx-3wwm"],"modified":"2026-07-27T09:11:39.348634930Z","published":"2026-07-16T19:07:30.804Z","database_specific":{"cwe_ids":["CWE-284"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54526.json","cna_assigner":"GitHub_M"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/argoproj/argo-workflows","events":[{"introduced":"0"},{"introduced":"a8bff4a72130bc1a13d95c6f73ff3fafec880287"},{"fixed":"358cc3968c8f06f1be0967e41df191088db0b662"},{"fixed":"277e9cef0ad16d7eaaab253573d0695951a65dbd"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"3.7.15"},{"introduced":"4.0.0"},{"fixed":"4.0.6"}]}}],"versions":["v4.0.5","v3.7.14","v3.7.13","v4.0.4","v3.7.12","v4.0.3","v4.0.2","v3.7.11","v3.7.10","v4.0.1","v4.0.0","v3.7.9","v3.7.8","v3.7.7","v3.7.6","v3.7.5","v3.7.4","v3.7.3","v3.7.2","v3.7.1","v3.7.0-rc4","v3.7.0","v3.7.0-rc3","v3.7.0-rc2","v3.7.0-rc1","v3.6.0-rc4","v3.6.0","v3.6.0-rc3","v3.6.0-rc2","v3.6.0-rc1","v3.5.0","v3.5.0-rc2","v3.5.0-rc1","v3.4.0-rc4","v3.4.0-rc3","v3.4.0-rc2","v3.4.0-rc1","v3.3.0-rc8","v3.3.0-rc7","v3.3.0-rc6","v3.3.0-rc5","v3.3.0-rc4","v3.3.0-rc3","v3.3.0-rc2","v3.3.0-rc1","v3.2.0-rc4","v3.2.0-rc3","v3.2.0-rc2","v3.2.0-rc1","v3.1.0-rc1","ui-v3-rc1","v2.10.0-rc1","v2.3.0-rc3","v2.3.0-rc2","v2.3.0-rc1","v2.2.1","v2.1.1","v2.2.0","v2.1.0","v2.1.0-beta2","v2.1.0-beta1","v2.1.0-alpha1","v2.0.0","v2.0.0-beta1","v2.0.0-alpha3","v2.0.0-alpha2","v2.0.0-alpha1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54526.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H"}]}