CVE-2026-30947 Parse Server ha a bypass of class-level permissions in LiveQuery
Unauthorized clients can bypass class-level permissions in Parse Server LiveQuery to receive real-time data from restricted classes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-30947?
CVE-2026-30947 is a high-severity missing authorization vulnerability in Parseplatform Parse-Server, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.3 and 8.6.16, class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time. This vulnerability is fixed in 9.5.2-alpha.3 and 8.6.16.
Weakness: CWE-863
Which versions are affected by CVE-2026-30947?
5 open source packages ship an affected version, including parse-server and parse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
parse-server npm | All versions | 8.6.16 |
parse-server npm | All versions | 8.6.16 |
parse-server npm | From 9.0.0 | 9.5.2-alpha.3 |
parse-server npm | From 9.0.0 | 9.5.2-alpha.3 |
parse Bitnami | All versions | 8.6.16, 9.5.2 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-30947?
Upgrade parse-server to a fixed version for your release line: 8.6.16 or 9.5.2-alpha.3.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-30947 being exploited?
There is no known exploitation of CVE-2026-30947 in the wild and no public exploit code.
Other vulnerabilities in Parseplatform Parse-Server
- CVE-2026-30966 Parse Server role escalation and CLP bypass via direct `_Join` table write
- CVE-2024-27298 Parse Server literalizeRegexPart SQL Injection
- CVE-2022-24760 Command Injection in Parse server
- CVE-2026-30965 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter
- CVE-2023-36475 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution
Sources
Also known as BIT-parse-2026-30947, GHSA-7ch5-98q2-7289.