CVE-2026-30850 Parse Server: File metadata endpoint bypasses `beforeFind` / `afterFind` trigger authorization
Attackers can bypass file access controls to read unauthorized file metadata if beforeFind or afterFind triggers are used for authorization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-30850?
CVE-2026-30850 is a medium-severity missing authorization vulnerability in Parseplatform Parse-Server, published on 7 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 versions 8.6.9 and 9.5.0-alpha.9, the file metadata endpoint (GET /files/:appId/metadata/:filename) does not enforce beforeFind / afterFind file triggers. When these triggers are used as access-control gates, the metadata endpoint bypasses them entirely, allowing unauthorized access to file metadata. This issue has been patched in versions 8.6.9 and 9.5.0-alpha.9.
Weakness: CWE-862
Which versions are affected by CVE-2026-30850?
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 | 8.6.9 |
parse-server npm | All versions | 8.6.9 |
parse-server npm | From 9.0.0-alpha.1 | 9.5.0-alpha.9 |
parse-server npm | From 9.0.0-alpha.1 | 9.5.0-alpha.9 |
parse Bitnami | All versions | 9.5.0 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-30850?
Upgrade parse-server to a fixed version for your release line: 8.6.9 or 9.5.0-alpha.9.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-30850 being exploited?
There is no known exploitation of CVE-2026-30850 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-2026-30850, GHSA-hwx8-q9cg-mqmc.