{"id":"CVE-2026-53609","revision":"00f471defcbc4843b422488c93af00f6","records":[{"revision":"00f471defcbc4843b422488c93af00f6","observedAt":"2026-10-27T14:13:22.737+00:00","statement":{"source":"nvd","id":"CVE-2026-53609","aliases":[],"title":"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 va…","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 process. As of time of publication, no known patched versions are available.","state":0,"publishedAt":"2026-06-12T22:16:52.803+00:00","modifiedAt":"2026-10-25T23:10:00.167+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-6h5j-32cf-4253"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53609","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-1321"],"productCriteria":[],"sourceDates":{"published":"2026-06-12T22:16:52.803","lastModified":"2026-10-25T23:10:00.167"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-53609","identifiers":["CVE-2026-53609"]},"retained":false,"historicalAffected":[]}],"coverage":[]}