{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.1.0"
              },
              {
                "fixed": "4.1.4"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "e5ed20d5cb54d4708d5aeb29148b3e49922f795c"
            },
            {
              "fixed": "b5b4d665e9be9b87c115f943584c3e0ae96fe073"
            }
          ],
          "repo": "https://github.com/argoproj/argo-workflows",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-q65w-j2vp-47c4"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93991.json"
  },
  "details": "Argo Workflows versions 4.1.0 through 4.1.3 contain an authorization bypass vulnerability in ListArchivedWorkflows that fails to apply cluster-scoped access review when the metadata.namespace field selector uses the NotEquals operator. Attackers with namespace-scoped list permissions can use a negated namespace field selector to retrieve archived workflows from all other namespaces, exposing spec arguments, parameter values, and annotations.",
  "id": "CVE-2026-93991",
  "modified": "2026-09-24T03:30:56.950336296Z",
  "published": "2026-09-19T22:58:11.895Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93991.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/argoproj/argo-workflows/releases/tag/v4.1.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93991"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/argo-workflows-4.1.0-through-4.1.3-cross-namespace-disclosure-via-negated-selector"
    },
    {
      "type": "FIX",
      "url": "https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/argoproj/argo-workflows"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector"
}