Parse Server: Denial of service via unindexed database query for unconfigured auth providers
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.58 and 9.6.0-alpha.52, 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. This issue has been patched in versions 8.6.58 and 9.6.0-alpha.52.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.6.0-alpha.52 | 9.6.0-alpha.52 |
parse-servernpm | < 8.6.58 | 8.6.58 |
Affected products
3- osv-coords2 versions
< 8.6.58+ 1 more
- (no CPE)range: < 8.6.58
- (no CPE)range: >= 9.0.0, < 9.6.0-alpha.52
- Range: < 8.6.58
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-g4cf-xj29-wqqrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33538ghsaADVISORY
- github.com/parse-community/parse-server/commit/40eb442e02672986730007d0a1edb22c1c4bd357ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/commit/fbac847499e57f243315c5fc7135be1d58bb8e54ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10270ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10271ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-g4cf-xj29-wqqrghsax_refsource_CONFIRMWEB
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