CVE-2026-33429

MEDIUM EPSS 23.3%
Published Mar 24, 20263mo ago · Modified Jun 17, 20262w ago
6.3 CVSS 4.0
Medium
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 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.

CVSS Details

Base Score
6.3
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/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 None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
23.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-203

Affected Products 44

VendorProductVersionRange
parseplatformparse-server* <8.6.54
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
parseplatformparse-server9.6.0any

References 5

  • github.com https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b
    Patch
  • github.com https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67
    Patch
  • github.com https://github.com/parse-community/parse-server/pull/10253
    Issue Tracking
  • github.com https://github.com/parse-community/parse-server/pull/10254
    Issue Tracking
  • github.com https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm
    Vendor Advisory

Remediation

  • github.com https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b
    Patch
  • github.com https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67
    Patch