Parse Server has a protected field change detection oracle via LiveQuery watch parameter

Impact An attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolea...

PT-2026-26760

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.54 Parse Server versions prior to 9.6.0-alpha.43 Description Parse Server contains a flaw where an attacker can subscribe to LiveQuery using a watch parameter that targets a protected field. While the actual...