GHSA-g4cf-xj29-wqqr
Parse Server: Denial of Service via unindexed database query for unconfigured auth providers
Details
### Impact
An unauthenticated attacker can cause Denial of Service by sending authentication requests with arbitrary, unconfigured provider names. The server executes a database query for each unconfigured provider before rejecting the request, and since no database index exists for unconfigured providers, each request triggers a full collection scan on the user database. This can be parallelized to saturate database resources.
### Patches
The fix validates that an authentication provider is configured before executing any database query. Requests with unconfigured providers are now rejected immediately without querying the database.
### Workarounds
There is no known workaround other than upgrading.
Are you affected?
Enter the version of the package you're using.
Affected packages
9.0.0 Fixed in: 9.6.0-alpha.52 npm install parse-server@9.6.0-alpha.52 References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-g4cf-xj29-wqqr [WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-33538 [ADVISORY]
- https://github.com/parse-community/parse-server/pull/10270 [WEB]
- https://github.com/parse-community/parse-server/pull/10271 [WEB]
- https://github.com/parse-community/parse-server/commit/40eb442e02672986730007d0a1edb22c1c4bd357 [WEB]
- https://github.com/parse-community/parse-server/commit/fbac847499e57f243315c5fc7135be1d58bb8e54 [WEB]
- https://github.com/parse-community/parse-server [PACKAGE]