#VU125011 Information Exposure Through Timing Discrepancy in Parse Server
Published: April 6, 2026
Vulnerability identifier: #VU125011
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-208
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Parse Server
Parse Server
Software vendor:
Parse Community
Parse Community
Description
The vulnerability allows a remote attacker to enumerate valid usernames or email addresses.
The vulnerability exists due to observable timing discrepancy in the login endpoint when processing login requests with submitted usernames or email addresses. A remote attacker can send login attempts with incorrect passwords and measure response times to enumerate valid usernames or email addresses.
Accounts without a stored password, such as OAuth-only accounts, are also affected by the timing side channel.
Remediation
Install security update from vendor's website.