GHSA-g4cf-xj29-wqqr
Parse Server: Denial of Service via unindexed database query for unconfigured auth providers
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0, < 9.6.0-alpha.52 | 9.6.0-alpha.52 |
| npm | parse-server | < 8.6.58 | 8.6.58 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/parse-community/parse-server/security/advisories/GHSA-g4cf-xj29-wqqr
- https://nvd.nist.gov/vuln/detail/CVE-2026-33538
- https://github.com/parse-community/parse-server/pull/10270
- https://github.com/parse-community/parse-server/pull/10271
- https://github.com/parse-community/parse-server/commit/40eb442e02672986730007d0a1edb22c1c4bd357
- https://github.com/parse-community/parse-server/commit/fbac847499e57f243315c5fc7135be1d58bb8e54
- https://github.com/parse-community/parse-server