Parse Server is vulnerable to authentication bypass via spoofing

CVE-2023-22474

What is CVE-2023-22474?

Parse Server, an open-source backend framework, is susceptible to improper client IP address validation when not deployed behind a proxy server. By manipulating the 'x-forwarded-for' request header, an attacker can bypass security controls reliant on the accurate determination of client IPs. This allows malicious actors to set their IP address as a trusted value, undermining the functionality of security features like 'masterKeyIps'. This issue has been resolved in version 5.4.1, which includes updates to improve IP address validation by enforcing the 'trustProxy' setting.

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