CVE-2021-21424

CVE-2021-21424 · Prevent user enumeration using Guard or the new Authenticator-based Security

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.

CVSS 5.3 · Medium · EPSS 1.6% · Fix available

Published

2021-05-13T00:00:00.000Z

Updated

2024-08-03T18:09:16.141Z

Stack: system · php

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