{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.2.0"
              },
              {
                "fixed": "3.2.11"
              },
              {
                "introduced": "3.3.0"
              },
              {
                "fixed": "3.3.9"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "66b2f302d91a42cc151808da0eec0846bbe1062c"
            },
            {
              "fixed": "6d66c1b29e4f25dccfb5b0c7a939785b0071ef9a"
            },
            {
              "introduced": "fd6b7d5b3cba5e7aa7ad400b0fb905a81018a77b"
            },
            {
              "fixed": "1b1bb48f981385cf40b282e965cf63419be3d93f"
            }
          ],
          "repo": "https://github.com/argoproj/argo-cd",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3v3m-wc6v-x4x3"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-200",
      "CWE-212"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42880.json"
  },
  "details": "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.",
  "id": "CVE-2026-42880",
  "modified": "2026-07-16T03:31:13.439972071Z",
  "published": "2026-05-07T22:20:39.506Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42880.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHBA-2026:12433"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:20943"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:20947"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42880"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42880.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42880"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467882"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction"
}