CVE-2026-39397 — Vulnerability in @delmaredigital/payload-puck —...

### Impact All `/api/puck/*` CRUD endpoint handlers registered by `createPuckPlugin()` called Payload's local API with the default `overrideAccess: true`, bypassing all collection-level access control. The `access` option passed to `createPuckPlugin()` and any `access` rules defined on Puck-registered collections were silently ignored on these endpoints. An unauthenticated remote attacker could: - List all documents (including drafts) in any Puck-registered collection - Read any document by ID (including drafts) - Create new documents with arbitrary field values - Update any document (including bypassing field-level access rules) - Delete any document - Read version history and restore arbitrary versions **In typical installations**, the affected scope is the collection backing the website's pages (default slug: `pages`). For most users this means an attacker could read, modify, create, or delete every page on the website — including unpublished drafts and version history. **Scope is limited to collections explicitly registered with `createPuckPlugin()`** — the endpoints validate the collection slug against an allowlist, so attackers cannot pivot to other Payload collections such as `users`, `media`, or business data not exposed to the plugin. The auto-created `puck-templates`, `puck-ai-prompts`, and `puck-ai-context` collections are also outside the allowlist; they have their own dedicated endpoints with separate authentication. Other endpoints in the plugin (AI, styles, prompts, context, and the Next.js API route factories in `src/api/`) were unaffected — they had their own authentication checks. ### Patches Fixed in **0.6.23**. All endpoint handlers in `src/endpoints/index.ts` now pass `overrideAccess: false` and forward `req` to Payload's local API, so collection-level access rules are evaluated against the current user. ### Workarounds If you cannot upgrade immediately, place a reverse-proxy or middleware authentication check in front of `/api/puck/*` to require an authenticated session before requests reach the plugin's handlers.