Auth bypass in Parse-community Parse-server

CVE-2026-34532

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.67 and 9.7.0-alpha.11, an attacker can bypass Cloud Function validator access controls by appending "prototype.co…

Vulnerability class: Broken Access Control

EPSS: 0.003 (19.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-34532?
CVE-2026-34532 is a critical-severity vulnerability in Parse-community Parse-server, classified under Incorrect Authorization. CVSS score: 9.1/10. Published 2026-03-31.
How severe is CVE-2026-34532?
Critical severity. CVSS v3 base score is 9.1 out of 10.