{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-53609/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-12T20:59:25.486Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-53609","@id":"https://www.cve.org/CVERecord?id=CVE-2026-53609","description":"ApostropheCMS is an open-source Node.js content management system. In versions up to and including 4.30.0, `apos.util.set()` traverses dot-notation paths without sanitizing `__proto__`, allowing an authenticated editor to write arbitrary values to `Object.prototype` via the `$pullAll` patch operator. A confirmed gadget in `publicApiCheck()` causes this to bypass authorization on all piece-type REST API endpoints for every subsequent unauthenticated request, for the lifetime of the Node.js proces"},"products":[{"@id":"cpe:2.3:a:apostrophecms:apostrophe:\\<\\=_4.30.0:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:apostrophecms:apostrophe:\\<\\=_4.30.0:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-12T20:59:25.486Z"}]}