CVE-2026-33538

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-400

• https://github.com/parse-community/parse-server/commit/40eb442e02672986730007d0a1edb22c1c4bd357Patch
• https://github.com/parse-community/parse-server/commit/fbac847499e57f243315c5fc7135be1d58bb8e54Patch
• https://github.com/parse-community/parse-server/pull/10270Issue Tracking
• https://github.com/parse-community/parse-server/pull/10271Issue Tracking
• https://github.com/parse-community/parse-server/security/advisories/GHSA-g4cf-xj29-wqqrVendor Advisory

Published

Mar 24, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-33532`yaml` is a YAML parser and serialiser for JavaScript. Parsi…4.3
• CVE-2026-33533Glances is an open-source system cross-platform monitoring t…6.5
• CVE-2026-33534EspoCRM is an open source customer relationship management a…4.3
• CVE-2026-33535ImageMagick is free and open-source software used for editin…5.5
• CVE-2026-33536ImageMagick is free and open-source software used for editin…4.7
• CVE-2026-33537Lychee is a free, open-source photo-management tool. The pat…5
• CVE-2026-33539Parse Server is an open source backend that can be deployed …7.2
• CVE-2026-3354The Wikilookup plugin for WordPress is vulnerable to Stored …4.4
• CVE-2026-33540Distribution is a toolkit to pack, ship, store, and deliver …7.5
• CVE-2026-33541TSPortal is the WikiTide Foundation’s in-house platform used…6.5
• CVE-2026-33542Incus is a system container and virtual machine manager. Pri…4.8
• CVE-2026-33543FOSSBilling is a free, open-source billing and client manage…9.3