Auth bypass in Parse-Community Parse-Server
CVE-2026-30850
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.9 and 9.5.0-alpha.9, the file metadata endpoint (GET /files/:appId/metadata/:filename) does not enforce beforeFind / afterFind file triggers. When these triggers are used as access-control gates, the metadata endpoint bypasses them entirely, allowing unauthorized access to file metadata. This issue has been patched in versions 8.6.9 and 9.5.0-alpha.9.
Vulnerability class: Broken Access Control
EPSS: 0.003 (21.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Parse-community Parse-server — versions < 8.6.9, < 9.5.0-alpha.9
- Parseplatform Parse-server — versions 9.5.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-30850?
- CVE-2026-30850 is a medium-severity vulnerability in Parse-Community Parse-Server, classified under Missing Authorization. CVSS score: 5.9/10. Published 2026-03-07.
- How severe is CVE-2026-30850?
- Medium severity. CVSS v3 base score is 5.9 out of 10.