CVE-2026-30967 Parse Server OAuth2 authentication adapter account takeover via identity spoofing
Attackers can authenticate as any user via OAuth2 token spoofing if the useridField option is not configured 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-2026-30967?
CVE-2026-30967 is a high-severity authentication bypass vulnerability in Parseplatform Parse-Server, published on 10 Mar 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 9.5.2-alpha.9. and 8.6.22, the OAuth2 authentication adapter, when configured without the useridField option, only verifies that a token is active via the provider's token introspection endpoint, but does not verify that the token belongs to the user identified by authData.id. An attacker with any valid OAuth2 token from the same provider can authenticate as any other user. This affects any Parse Server deployment that uses the generic OAuth2 authentication adapter (configured with oauth2: true) without setting the useridField option. This vulnerability is fixed in 9.5.2-alpha.9. and 8.6.22.
Weakness: CWE-287
Which versions are affected by CVE-2026-30967?
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 | 8.6.22 |
parse-server npm | All versions | 8.6.22 |
parse-server npm | From 9.0.0-alpha.1 | 9.5.2-alpha.9 |
parse-server npm | From 9.0.0-alpha.1 | 9.5.2-alpha.9 |
parse Bitnami | All versions | 8.6.22, 9.5.2 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-30967?
Upgrade parse-server to a fixed version for your release line: 8.6.22 or 9.5.2-alpha.9.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-30967 being exploited?
There is no known exploitation of CVE-2026-30967 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-2026-30967, GHSA-fr88-w35c-r596.