Intel

AIKIDO-2025-10504

craftcms/cms is vulnerable to Observable Response Discrepancy

Observable Response Discrepancy Pre-CVE
Found by Aikido Intel before public disclosure or CVE publication.
Published Jul 25, 2025

44

Medium Risk

This Affects:

phpcraftcms/cms
4.0.0 - 4.16.6
Fixed in 4.16.7
5.0.0 - 5.8.9
Fixed in 5.8.10
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TL;DR

Affected versions of the package are vulnerable to user account enumeration, even when the preventUserEnumeration setting is enabled. This flaw allows attackers to infer whether a user account exists based on differences in the application's response behavior, potentially enabling targeted attacks such as credential stuffing or phishing.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range.

Background info

craftcms/cms is vulnerable to Observable Response Discrepancy in versions 4.0.0 - 4.16.6 and 5.0.0 - 5.8.9.

How to fix this

Upgrade the craftcms/cms library to the patch version.