{"cve":"CVE-2026-42880","nvd":{"published":"2026-05-07T23:16:32.450","modified":"2026-10-26T20:10:00.160","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":9.6},"cwes":["CWE-200","CWE-212","CWE-201"],"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"],"products":["argoproj:argo_cd"],"source":"nvd","synced_at":"2026-10-26T20:34:58.897451322+00:00"},"epss":{"cve":"CVE-2026-42880","score":0.00645,"percentile":0.50646,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-3v3m-wc6v-x4x3","url":"https://osv.dev/vulnerability/GHSA-3v3m-wc6v-x4x3","summary":"ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction","modified":"2026-10-21T03:11:56.342686369Z","packages":[{"ecosystem":"Go","name":"github.com/argoproj/argo-cd/v3","purl":"pkg:golang/github.com/argoproj/argo-cd/v3","ranges":[">=3.2.0 <3.2.11"],"fixed":["3.2.11"]},{"ecosystem":"Go","name":"github.com/argoproj/argo-cd/v3","purl":"pkg:golang/github.com/argoproj/argo-cd/v3","ranges":[">=3.3.0 <3.3.9"],"fixed":["3.3.9"]}]},{"id":"GO-2026-5099","url":"https://osv.dev/vulnerability/GO-2026-5099","summary":"ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction in github.com/argoproj/argo-cd","modified":"2026-07-08T08:11:34.582855972Z","packages":[{"ecosystem":"Go","name":"github.com/argoproj/argo-cd","purl":"pkg:golang/github.com/argoproj/argo-cd","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/argoproj/argo-cd/v2","purl":"pkg:golang/github.com/argoproj/argo-cd/v2","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/argoproj/argo-cd/v3","purl":"pkg:golang/github.com/argoproj/argo-cd/v3","ranges":[">=3.2.0 <3.2.11",">=3.3.0 <3.3.9"],"fixed":["3.2.11","3.3.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}