{"id":"CVE-2026-58200","state":"PUBLISHED","title":"@jhb.software/payload-cloudinary-plugin: Arbitrary Cloudinary API Parameter Signing","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.","publishedAt":"2026-09-15T16:27:26.459Z","updatedAt":"2026-09-15T19:45:35.084Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["jhb-software payload-plugins"],"affected":[{"vendor":"jhb-software","product":"payload-plugins","versions":[{"version":">= 0.3.0, < 0.4.0","status":"affected"}]}],"references":["https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-h5x8-xp6m-x6q4","https://github.com/jhb-software/payload-plugins/pull/155","https://github.com/jhb-software/payload-plugins/commit/da2325901c5eeced17d33a1b2e647e300b8cbff2","https://github.com/jhb-software/payload-plugins/releases/tag/cloudinary@0.4.0"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/58xxx/CVE-2026-58200.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58200","state":"PUBLISHED","datePublished":"2026-09-15T16:27:26.459Z","dateUpdated":"2026-09-15T19:45:35.084Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-29T17:09:25.872Z"},"containers":{"cna":{"title":"@jhb.software/payload-cloudinary-plugin: Arbitrary Cloudinary API Parameter Signing","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"jhb-software","product":"payload-plugins","versions":[{"version":">= 0.3.0, < 0.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-h5x8-xp6m-x6q4","name":"https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-h5x8-xp6m-x6q4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/jhb-software/payload-plugins/pull/155","name":"https://github.com/jhb-software/payload-plugins/pull/155","tags":["x_refsource_MISC"]},{"url":"https://github.com/jhb-software/payload-plugins/commit/da2325901c5eeced17d33a1b2e647e300b8cbff2","name":"https://github.com/jhb-software/payload-plugins/commit/da2325901c5eeced17d33a1b2e647e300b8cbff2","tags":["x_refsource_MISC"]},{"url":"https://github.com/jhb-software/payload-plugins/releases/tag/cloudinary@0.4.0","name":"https://github.com/jhb-software/payload-plugins/releases/tag/cloudinary@0.4.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-15T16:27:26.459Z"},"source":{"advisory":"GHSA-h5x8-xp6m-x6q4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T18:57:42.458955Z","id":"CVE-2026-58200","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-15T19:45:35.084Z"}}]}}}