{"id":"CVE-2026-54526","sourceIdentifier":"security-advisories@github.com","published":"2026-07-16T19:16:50.373","lastModified":"2026-10-24T20:10:00.137","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Argo Workflows es un motor de flujo de trabajo nativo de contenedores de código abierto para orquestar trabajos paralelos en Kubernetes. Antes de las versiones 3.7.15 y 4.0.6, la corrección de la lista de permitidos para CVE-2026-31892 es incompleta porque workflow/util/merge.go ValidateUserOverrides y SanitizeUserWorkflowSpec recorren solo los campos de nivel superior de WorkflowSpec a través de reflexión, y WorkflowSpec.ArtifactGC está en la lista de permitidos en su totalidad; la estructura detrás de ese campo, WorkflowLevelArtifactGC, tiene un subcampo PodSpecPatch cuyos contenidos fluyen sin modificar a util.ApplyPodSpecPatch en el pod de recolección de elementos (artifact-GC pod), el mismo sumidero que la corrección original cerró para WorkflowSpec.PodSpecPatch, por lo que un usuario que envía un flujo de trabajo bajo templateReferencing: Strict o Secure (contra un WorkflowTemplate referenciado que declara un artefacto de salida y establece spec.artifactGC.strategy: OnWorkflowCompletion) aún puede inyectar un parche de fusión estratégico arbitrario en el pod de recolección de elementos (artifact-GC pod), incluyendo volúmenes hostPath, privileged: true, imagen y comando arbitrarios, y hostNetwork: true, frustrando el propósito declarado del modo de referencia Strict/Secure. Este problema está solucionado en las versiones 3.7.15 y 4.0.6."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"argoproj","product":"argo-workflows","versions":[{"version":"< 3.7.15","status":"affected"},{"version":">= 4.0.0, < 4.0.6","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":8.9,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":9.9,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.1,"impactScore":6.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-17T13:57:39.248649Z","id":"CVE-2026-54526","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-284"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*","versionEndExcluding":"3.7.15","matchCriteriaId":"0E0E74AD-D383-43A3-91FF-CD94714A655D"},{"vulnerable":true,"criteria":"cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*","versionStartIncluding":"4.0.0","versionEndExcluding":"4.0.6","matchCriteriaId":"62C874DA-A52E-4068-8FE7-107E223EE20B"}]}]}],"references":[{"url":"https://github.com/argoproj/argo-workflows/commit/277e9cef0ad16d7eaaab253573d0695951a65dbd","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/argoproj/argo-workflows/commit/358cc3968c8f06f1be0967e41df191088db0b662","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/argoproj/argo-workflows/releases/tag/v3.7.15","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/argoproj/argo-workflows/releases/tag/v4.0.6","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-48p8-g2fx-3wwm","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-48p8-g2fx-3wwm","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}