Home/CVE/Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to version
CVE

CVE-2026-33538

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to version

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.

HIGH · CVSS 7.5 EPSS 0.00142
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

3
parseplatform parse-server< 8.6.58
parseplatform parse-server>= 9.0.0 and < 9.6.0
parseplatform parse-serverall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
npm parse-server HIGH fixed in 9.6.0-alpha.52
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Mar 2026 · 07:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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
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