---
id: CVE-2026-58200
title: Payload Plugins is a collection of plugins designed to enhance Payload CMS
summary: >-
  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 hand…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'
cwe:
  - CWE-347
vendor: jhb-software
product: payload-plugins
affected:
  - 'payload-plugins >= 0.3.0, < 0.4.0'
published: '2026-09-15'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T20:17:24.827'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-58200'
references:
  - url: >-
      https://github.com/jhb-software/payload-plugins/commit/da2325901c5eeced17d33a1b2e647e300b8cbff2
    label: security-advisories@github.com
  - url: 'https://github.com/jhb-software/payload-plugins/pull/155'
    label: security-advisories@github.com
  - url: >-
      https://github.com/jhb-software/payload-plugins/releases/tag/cloudinary@0.4.0
    label: security-advisories@github.com
  - url: >-
      https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-h5x8-xp6m-x6q4
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T18:57:42.458955Z'
ingestedAt: '2026-09-15T16:40:03.396Z'
epss: 0.00314
epssPercentile: 0.21611
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.