CVE-2026-33429
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, 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 boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.
How to fix
- parseplatform parse-server8.6.54, 9.6.0 or later
- parse-server9.6.0-alpha.43, 8.6.54 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| parseplatform parse-server | v < 8.6.54, 9.0.0 ≤ v < 9.6.0, 9.6.0 | 8.6.54, 9.6.0 |
| parse-servernpm | 9.0.0 ≤ v < 9.6.0-alpha.43, v < 8.6.54 | 9.6.0-alpha.43, 8.6.54 |
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