CVE-2026-33429

Parse Server exposes a protected-field information leak via LiveQuery watch parameter. Prior to versions 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe with watch targeting a protected field; while the field value is stripped from payloads, the presence or absence of update events creates a...

Information Exposure

Overview parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js. Affected versions of this package are vulnerable to Information Exposure via the watch parameter in LiveQuery subscriptions targeting protected fields. An attacker can infer...

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...