CVE-2026-32098

Description

### Impact An attacker can exploit LiveQuery subscriptions to infer the values of protected fields without directly receiving them. By subscribing with a WHERE clause that references a protected field (including via dot-notation or `$regex`), the attacker can observe whether LiveQuery events are delivered for matching objects. This creates a boolean oracle that leaks protected field values. The attack affects any class that has both `protectedFields` configured in Class-Level Permissions and LiveQuery enabled. ### Patches The fix adds validation of the LiveQuery subscription WHERE clause against the class's protected fields, mirroring the existing REST API validation. If a subscription's WHERE clause references a protected field directly, via dot-notation, or inside `$or` / `$and` / `$nor` operators, the subscription is rejected with a permission error. This is applied during subscription creation, so existing event delivery paths are not affected. ### Workarounds Disable LiveQuery for classes that use `protectedFields` in their Class-Level Permissions, or remove `protectedFields` from classes that require LiveQuery. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-j7mm-f4rv-6q6q - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.9 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.35

How to fix CVE-2026-32098

To remediate CVE-2026-32098, upgrade the affected package to a fixed version below.

• —upgrade to 8.6.35 or later
• —upgrade to 9.6.0-alpha.9 or later

Is CVE-2026-32098 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 8.6.35, >= 9.0.0, < 9.6.0
• >= 9.0.0, < 9.6.0-alpha.9

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-32098
• PATCHgithub.com/parse-community/parse-server
• WEBgithub.com/parse-community/parse-server/releases/tag/8.6.35
• WEBgithub.com/parse-community/parse-server/releases/tag/9.6.0-alpha.9