CVE-2026-34595
EUVD-2026-1750431.03.2026, 16:16
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.70 and 9.7.0-alpha.18, an authenticated user with find class-level permission can bypass the protectedFields class-level permission setting on LiveQuery subscriptions. By sending a subscription with a $or, $and, or $nor operator value as a plain object with numeric keys and a length property (an "array-like" object) instead of an array, the protected-field guard is bypassed. The subscription event firing acts as a binary oracle, allowing the attacker to infer whether a protected field matches a given test value. This issue has been patched in versions 8.6.70 and 9.7.0-alpha.18.
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| parseplatform | parse-server | 𝑥 < 8.6.70 |
| parseplatform | parse-server | 9.0.0 ≤ 𝑥 < 9.7.0 |
| parseplatform | parse-server | 9.7.0:alpha1 |
| parseplatform | parse-server | 9.7.0:alpha10 |
| parseplatform | parse-server | 9.7.0:alpha11 |
| parseplatform | parse-server | 9.7.0:alpha12 |
| parseplatform | parse-server | 9.7.0:alpha13 |
| parseplatform | parse-server | 9.7.0:alpha14 |
| parseplatform | parse-server | 9.7.0:alpha15 |
| parseplatform | parse-server | 9.7.0:alpha2 |
| parseplatform | parse-server | 9.7.0:alpha3 |
| parseplatform | parse-server | 9.7.0:alpha4 |
| parseplatform | parse-server | 9.7.0:alpha5 |
| parseplatform | parse-server | 9.7.0:alpha6 |
| parseplatform | parse-server | 9.7.0:alpha7 |
| parseplatform | parse-server | 9.7.0:alpha8 |
| parseplatform | parse-server | 9.7.0:alpha9 |
𝑥
= Vulnerable software versions
References