CVE-2026-34784 Parse Server: Streaming file download bypasses afterFind file trigger authorization
Attackers can bypass file access controls in Parse Server by using HTTP Range requests, allowing unauthorized access to protected files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34784?
CVE-2026-34784 is a high-severity missing authorization vulnerability in Parseplatform Parse-Server, published on 31 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 8.6.71 and 9.7.1-alpha.1, file downloads via HTTP Range requests bypass the afterFind(Parse.File) trigger and its validators on storage adapters that support streaming (e.g. the default GridFS adapter). This allows access to files that should be protected by afterFind trigger authorization logic or built-in validators such as requireUser. This issue has been patched in versions 8.6.71 and 9.7.1-alpha.1.
Weakness: CWE-285
Which versions are affected by CVE-2026-34784?
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 | 8.6.71 |
parse-server npm | All versions | 8.6.71 |
parse-server npm | From 9.0.0 | 9.7.1-alpha.1 |
parse-server npm | From 9.0.0 | 9.7.1-alpha.1 |
parse Bitnami | All versions | 8.6.71, 9.7.1 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-34784?
Upgrade parse-server to a fixed version for your release line: 8.6.71 or 9.7.1-alpha.1.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-34784 being exploited?
There is no known exploitation of CVE-2026-34784 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-2026-34784, GHSA-hpm8-9qx6-jvwv.