CVE-2026-42880

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"baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "argoproj", "product": "argo-cd", "versions": [{"status": "affected", "version": ">= 3.2.0, < 3.2.11"}, {"status": "affected", "version": ">= 3.3.0, < 3.3.9"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:openshift_gitops:1.19::el8"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps 1.19", "versions": [{"status": "unaffected", "version": "1779211412", "lessThan": "*", "versionType": "rpm"}], "packageName": "openshift-gitops-1/argocd-image-updater-rhel8", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1.20::el9"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps 1.20", "versions": [{"status": "unaffected", "version": "1776942799", "lessThan": "*", "versionType": "rpm"}], "packageName": "openshift-gitops-1/argocd-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1.20::el9"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps 1.20", "versions": [{"status": "unaffected", "version": "1779285564", "lessThan": "*", "versionType": "rpm"}], "packageName": "openshift-gitops-1/argocd-agent-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1.20::el9"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps 1.20", "versions": [{"status": "unaffected", "version": "1779285074", "lessThan": "*", "versionType": "rpm"}], "packageName": "openshift-gitops-1/argocd-image-updater-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1.20::el9"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps 1.20", "versions": [{"status": "unaffected", "version": "1779284685", "lessThan": "*", "versionType": "rpm"}], "packageName": "openshift-gitops-1/gitops-rhel9-operator", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_data_foundation:4"], "vendor": "Red Hat", "product": "Red Hat Openshift Data Foundation 4", "packageName": "odf4/odf-multicluster-rhel9-operator", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps", "packageName": "openshift-gitops-1/argocd-agent-rhel8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps", "packageName": "openshift-gitops-1/argocd-rhel8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps", "packageName": "openshift-gitops-1/gitops-rhel8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps", "packageName": "openshift-gitops-1/gitops-rhel8-operator", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:openshift_gitops:1"], "vendor": "Red Hat", "product": "Red Hat OpenShift GitOps", "packageName": "openshift-gitops-1/gitops-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-05-07T23:16:32.450", "references": [{"url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/errata/RHBA-2026:12433", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20943", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20947", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-42880", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467882", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42880.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-212"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-201"}]}], "descriptions": [{"lang": "en", "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9."}, {"lang": "es", "value": "Argo CD es una herramienta de entrega continua declarativa, GitOps para Kubernetes. Desde las versiones 3.2.0 hasta antes de la 3.2.11 y de la 3.3.0 hasta antes de la 3.3.9, existe una brecha de autorizaci\u00f3n y enmascaramiento de datos faltante en el endpoint ServerSideDiff de Argo CD que permite a un atacante con acceso de solo lectura extraer datos de Secret de Kubernetes en texto plano de etcd a trav\u00e9s del mecanismo de simulaci\u00f3n (dry-run) de Aplicaci\u00f3n del Lado del Servidor (Server-Side Apply) del servidor API de Kubernetes. Este problema ha sido parcheado en las versiones 3.2.11 y 3.3.9."}], "lastModified": "2026-10-26T20:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7D45D78D-37C6-4090-849B-BE4B9F873741", "versionEndExcluding": "3.2.11", "versionStartIncluding": "3.2.0"}, {"criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8A57863A-48B6-4926-87C7-6FBBE3E30A4B", "versionEndExcluding": "3.3.9", "versionStartIncluding": "3.3.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}