Vulnerability record · CVE-2026-30229 · published 6 March 2026

CVE-2026-30229: Parseplatform parse-server incorrect authorization vulnerability

Parseplatform · Parse Server

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.

8.5 CVSS 4.0 High EPSS 0.56% · top 55.6% CWE-863 · Incorrect authorization

8.5CVSS 4.0 base score

0.56%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Parse Server Parseplatform

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-30229), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.