{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "2026.08.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2898c01789f0817af712aebba859a8d14aa7e5d8"
            }
          ],
          "repo": "https://github.com/nocodb/nocodb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4cx5-q9xx-5pgj"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126276.json"
  },
  "details": "NocoDB before 2026.08.1 contains an authentication bypass vulnerability in oauth-token.service.ts that treats PKCE as a substitute for confidential client authentication, skipping client secret verification when omitted. Attackers holding a captured authorization code and PKCE verifier can mint access tokens and 60-day refresh tokens for a confidential client without knowing its secret.",
  "id": "CVE-2026-126276",
  "modified": "2026-11-14T02:31:05.311483575Z",
  "published": "2026-11-13T09:36:43.031Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126276.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nocodb/nocodb/security/advisories/GHSA-4cx5-q9xx-5pgj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126276"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/nocodb-before-2026.08.1-client-authentication-bypass-via-oauth-token-exchange"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "NocoDB before 2026.08.1 Client Authentication Bypass via OAuth Token Exchange"
}