CVE-2026-53609

CVE-2026-53609 involves ApostropheCMS (Node.js) up to version 4.30.0, where apos.util.set() can traverse dot-notation paths and fail to sanitize proto , enabling an authenticated editor to write arbitrary values to Object.prototype via the $pullAll patch operator. A confirmed gadget in publicApiC...

CVE-2026-53609 Apostrophe has Server-Side Prototype Pollution in apos.util.set via patch operators that leads to process-wide authorization bypass

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 confirm...