CVE-2026-33538

UNKNOWN 0.0

Parse Server: Denial of service via unindexed database query for unconfigured auth providers

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-400
Vendor	parse-community
Product	parse-server
Published	Mar 24, 2026
Last Updated	Mar 24, 2026

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Affected Versions

parse-community / parse-server

< 8.6.58 >= 9.0.0, < 9.6.0-alpha.52

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/parse-community/parse-server/security/advisories/GHSA-g4cf-xj29-wqqr github.com: https://github.com/parse-community/parse-server/pull/10270 github.com: https://github.com/parse-community/parse-server/pull/10271 github.com: https://github.com/parse-community/parse-server/commit/40eb442e02672986730007d0a1edb22c1c4bd357 github.com: https://github.com/parse-community/parse-server/commit/fbac847499e57f243315c5fc7135be1d58bb8e54