{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.3.0"
              },
              {
                "fixed": "0.4.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "004270e7a9bb2b39c41149e96c04657a00edf3cb"
            },
            {
              "fixed": "da2325901c5eeced17d33a1b2e647e300b8cbff2"
            },
            {
              "fixed": "829dce5c773bccdff87fb237b46b97502f0ec11f"
            }
          ],
          "repo": "https://github.com/jhb-software/payload-plugins",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-h5x8-xp6m-x6q4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58200.json"
  },
  "details": "Payload Plugins is a collection of plugins designed to enhance Payload CMS. From 0.3.0 until 0.4.0, @jhb.software/payload-cloudinary-plugin deployments with clientUploads enabled expose POST /api/cloudinary-generate-signature, whose handler in cloudinary/src/getGenerateSignature.ts passes attacker-controlled body.paramsToSign directly to cloudinary.utils.api_sign_request without a key allowlist, collection policy, timestamp freshness check, or configured-folder enforcement. Any authenticated Payload user can obtain a valid Cloudinary HMAC-SHA1 signature for unauthorized parameters such as overwrite, type, notification_url, invalidate, folder, and public_id. The signature can authorize asset replacement, upload visibility changes, callbacks to attacker-selected URLs, cache invalidation, and uploads outside the intended folder. The client-visible Cloudinary API key is expected by the upload design, but the unrestricted server-side signature supplies the authorization value needed to complete these operations. This vulnerability is fixed in 0.4.0.",
  "id": "CVE-2026-58200",
  "modified": "2026-09-17T03:30:21.248301119Z",
  "published": "2026-09-15T16:27:26.459Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jhb-software/payload-plugins/releases/tag/cloudinary@0.4.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58200.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-h5x8-xp6m-x6q4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58200"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jhb-software/payload-plugins/commit/da2325901c5eeced17d33a1b2e647e300b8cbff2"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jhb-software/payload-plugins/pull/155"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "@jhb.software/payload-cloudinary-plugin: Arbitrary Cloudinary API Parameter Signing"
}