{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42296","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-26T12:13:55.552Z","datePublished":"2026-05-09T03:52:03.456Z","dateUpdated":"2026-06-30T12:08:41.266Z"},"containers":{"cna":{"title":"Argo Workflows has incomplete fix for CVE-2026-31892: hostNetwork, securityContext, serviceAccountName bypass templateReferencing Strict/Secure","problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3775-99mw-8rp4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3775-99mw-8rp4"},{"name":"https://github.com/argoproj/argo-workflows/commit/534f4ff1cbd86908e8ff76d97d553ad5a49a950d","tags":["x_refsource_MISC"],"url":"https://github.com/argoproj/argo-workflows/commit/534f4ff1cbd86908e8ff76d97d553ad5a49a950d"},{"name":"https://github.com/argoproj/argo-workflows/releases/tag/v3.7.14","tags":["x_refsource_MISC"],"url":"https://github.com/argoproj/argo-workflows/releases/tag/v3.7.14"},{"name":"https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5","tags":["x_refsource_MISC"],"url":"https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5"}],"affected":[{"vendor":"argoproj","product":"argo-workflows","versions":[{"version":"< 3.7.14","status":"affected"},{"version":">= 4.0.0, < 4.0.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-09T03:52:03.456Z"},"descriptions":[{"lang":"en","value":"Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.7.14 and 4.0.5, a user with create Workflow permission can bypass templateReferencing: Strict to get host network access, switch service accounts, override pod security context, add tolerations to schedule on control-plane nodes, or enable SA token mounting. This defeats the stated purpose of the feature. The practical impact depends on what Kubernetes-level controls are in place. Clusters with PodSecurity admission or OPA/Gatekeeper would independently block some of these (like hostNetwork). Clusters that rely on Argo's Strict mode as the primary enforcement layer are fully exposed. This issue has been patched in versions 3.7.14 and 4.0.5."}],"source":{"advisory":"GHSA-3775-99mw-8rp4","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3775-99mw-8rp4","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-12T17:51:11.816105Z","id":"CVE-2026-42296","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-12T18:31:15.581Z"}},{"affected":[{"cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"affected","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}],"datePublic":"2026-05-09T03:52:03.456Z","descriptions":[{"lang":"en","value":"A flaw was found in Argo Workflows. A user with create Workflow permission can bypass the `templateReferencing: Strict` security control. This bypass allows the user to gain host network access, switch service accounts, override pod security context, add tolerations to schedule on control-plane nodes, or enable Service Account (SA) token mounting. This could lead to privilege escalation and unauthorized access within the Kubernetes cluster."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"Incorrect Authorization","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-42296"},{"name":"RHBZ#2468446","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2468446"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42296.json"}],"timeline":[{"lang":"en","time":"2026-05-09T05:01:27.119Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-05-09T03:52:03.456Z","value":"Made public."}],"title":"Argo Workflows: github.com/argoproj/argo-workflows: Argo Workflows: Privilege escalation via security control bypass","workarounds":[{"lang":"en","value":"Upgrade Argo Workflows to version 3.7.14 or later (3.x line) or 4.0.5+ (4.x line) in affected Red Hat OpenShift AI releases. Red Hat OpenShift AI engineering is expected to deliver updated Data Science Pipelines builds for affected streams (rhoai-2.25, rhoai-3.3, rhoai-3.4).\n\nAs a defense-in-depth measure, enforce PodSecurity admission or policy controls to block hostNetwork, privileged pods, and unauthorized service account use independently of Argo templateReferencing settings. Restrict Workflow create permissions to trusted principals."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:08:41.266Z"}}]}}