{"cve":"CVE-2026-58200","nvd":{"published":"2026-09-15T17:17:23.113","modified":"2026-09-30T17:51:56.193","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","score":7.1},"cwes":["CWE-347"],"references":["https://github.com/jhb-software/payload-plugins/commit/da2325901c5eeced17d33a1b2e647e300b8cbff2","https://github.com/jhb-software/payload-plugins/pull/155","https://github.com/jhb-software/payload-plugins/releases/tag/cloudinary@0.4.0","https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-h5x8-xp6m-x6q4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-58200","score":0.00314,"percentile":0.24071,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-h5x8-xp6m-x6q4","url":"https://osv.dev/vulnerability/GHSA-h5x8-xp6m-x6q4","summary":"@jhb.software/payload-cloudinary-plugin: Arbitrary Cloudinary API Parameter Signing","modified":"2026-09-16T03:56:06.318054839Z","packages":[{"ecosystem":"npm","name":"@jhb.software/payload-cloudinary-plugin","purl":"pkg:npm/%40jhb.software/payload-cloudinary-plugin","ranges":[">=0.3.0 <0.4.0"],"fixed":["0.4.0"]}]}],"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."]}