CVE-2026-33421

HIGH EPSS 31.5%
Published Mar 24, 20263mo ago · Modified Jun 17, 20262w ago
7.1 CVSS 4.0
High
Find Similar
Published Mar 24, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.53 and 9.6.0-alpha.42, Parse Server's LiveQuery WebSocket interface does not enforce Class-Level Permission (CLP) pointer permissions (readUserFields and pointerFields). Any authenticated user can subscribe to LiveQuery events and receive real-time updates for all objects in classes protected by pointer permissions, regardless of whether the pointer fields on those objects point to the subscribing user. This bypasses the intended read access control, allowing unauthorized access to potentially sensitive data that is correctly restricted via the REST API. This issue has been patched in versions 8.6.53 and 9.6.0-alpha.42.

CVSS Details

Base Score
7.1
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
31.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 43

VendorProductVersionRange
parseplatformparse-server* <8.6.53
parseplatformparse-server*≥9.0.0  –  <9.6.0
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any
parseplatformparse-server9.6.0any

References 5

  • github.com https://github.com/parse-community/parse-server/commit/6c3317aca6eb618ac48f999021ae3ef7766ad1ea
    Patch
  • github.com https://github.com/parse-community/parse-server/commit/976dad109f3fe3fbd0a3a35ef62e7a5d35eb0bee
    Patch
  • github.com https://github.com/parse-community/parse-server/pull/10250
    Issue Tracking
  • github.com https://github.com/parse-community/parse-server/pull/10252
    Issue Tracking
  • github.com https://github.com/parse-community/parse-server/security/advisories/GHSA-fph2-r4qg-9576
    Vendor Advisory

Remediation

  • github.com https://github.com/parse-community/parse-server/commit/6c3317aca6eb618ac48f999021ae3ef7766ad1ea
    Patch
  • github.com https://github.com/parse-community/parse-server/commit/976dad109f3fe3fbd0a3a35ef62e7a5d35eb0bee
    Patch