Origin validation error in Parse Server - CVE-2026-34373
Published: March 30, 2026
Vulnerability identifier: #VU124684
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34373
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Parse Community
Affected software:
Parse Server
Parse Server
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the GraphQL API endpoint ignores CORS origin restriction. A remote attacker can gain access to sensitive information on the system.
How to mitigate CVE-2026-34373
Install updates from vendor's website.