{"id":"CVE-2026-42880","revision":"a2d6181101e34df298b97203eea27d9f","records":[{"revision":"a2d6181101e34df298b97203eea27d9f","observedAt":"2026-10-25T10:17:15.856+00:00","statement":{"source":"nvd","id":"CVE-2026-42880","aliases":[],"title":"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…","description":"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.","state":0,"publishedAt":"2026-05-07T23:16:32.45+00:00","modifiedAt":"2026-09-07T13:19:49.737+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":9.6,"severity":"CRITICAL"},{"system":"CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":7.7,"severity":"HIGH"}],"references":["https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3","https://access.redhat.com/errata/RHBA-2026:12433","https://access.redhat.com/errata/RHSA-2026:20943","https://access.redhat.com/errata/RHSA-2026:20947","https://access.redhat.com/security/cve/CVE-2026-42880","https://bugzilla.redhat.com/show_bug.cgi?id=2467882","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42880.json"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-42880","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-200","CWE-212","CWE-201"],"productCriteria":["cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-05-07T23:16:32.450","lastModified":"2026-09-07T13:19:49.737"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-42880","identifiers":["CVE-2026-42880"]},"retained":false,"historicalAffected":[]}],"coverage":[]}