CVE-2026-39381 Parse Server's Endpoint `/sessions/me` bypasses `_Session` `protectedFields`
Authenticated users can bypass protected field restrictions on their own session data via the /sessions/me endpoint in Parse Server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-39381?
CVE-2026-39381 is a medium-severity missing authorization vulnerability in Parseplatform Parse-Server, published on 7 Apr 2026. Any signed-in user can exploit it over the network, 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 9.8.0-alpha.7 and 8.6.75, the GET /sessions/me endpoint returns _Session fields that the server operator explicitly configured as protected via the protectedFields server option. Any authenticated user can retrieve their own session's protected fields with a single request. The equivalent GET /sessions and GET /sessions/:objectId endpoints correctly strip protected fields. This vulnerability is fixed in 9.8.0-alpha.7 and 8.6.75.
Weakness: CWE-863
Which versions are affected by CVE-2026-39381?
5 open source packages ship an affected version, including parse-server and parse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
parse-server npm | From 7.0.0 | 8.6.75 |
parse-server npm | From 7.0.0 | 8.6.75 |
parse-server npm | From 9.0.0 | 9.8.0-alpha.7 |
parse-server npm | From 9.0.0 | 9.8.0-alpha.7 |
parse Bitnami | From 7.0.0 | 8.6.75, 9.8.0 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-39381?
Upgrade parse-server to a fixed version for your release line: 8.6.75 or 9.8.0-alpha.7.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-39381 being exploited?
There is no known exploitation of CVE-2026-39381 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-2026-39381, GHSA-g4v2-qx3q-4p64.