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-2026-30229

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 8.6.6 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.

HIGH · CVSS 7.2 EPSS 0.00024
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-863Incorrect Authorization
▤

Affected Products & Versions

3
parseplatform parse-server< 8.6.6
parseplatform parse-server>= 9.0.0 and <= 9.4.1
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 8.6.6
▣

Scoring & Timeline

7.2
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 NVD06 Mar 2026 · 09:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
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

3
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/releases/tag/8.6.6ProductRelease Notes
https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.4ProductRelease Notes
https://github.com/parse-community/parse-server/security/advisories/GHSA-79wj-8rqv-jvp5Vendor Advisory
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