CVE-2026-30229

HIGH EPSS 30.7%
Published Mar 6, 20263mo ago · Modified Jun 17, 20262w ago
8.5 CVSS 4.0
High
Find Similar
Published Mar 6, 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 8.6.6 and 9.5.0-alpha.4, the readOnlyMasterKey can call POST /loginAs to obtain a valid session token for any user. This allows a read-only credential to impersonate arbitrary users with full read and write access to their data. Any Parse Server deployment that uses readOnlyMasterKey is affected. This issue has been patched in versions 8.6.6 and 9.5.0-alpha.4.

CVSS Details

Base Score
8.5
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/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 High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
30.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 5

VendorProductVersionRange
parseplatformparse-server* <8.6.6
parseplatformparse-server*≥9.0.0  –  ≤9.4.1
parseplatformparse-server9.5.0any
parseplatformparse-server9.5.0any
parseplatformparse-server9.5.0any

References 3

  • github.com https://github.com/parse-community/parse-server/releases/tag/8.6.6
    ProductRelease Notes
  • github.com https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.4
    ProductRelease Notes
  • github.com https://github.com/parse-community/parse-server/security/advisories/GHSA-79wj-8rqv-jvp5
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.