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Open-source package vulnerability · Composer (PHP)

GHSA-2f4r-34m4-3w8q: Auth0 Wordpress plugin Vulnerable to Brute Force Authentication Tags of CookieStore Sessions

criticalCVSS 3.1 9.1

Overview Session cookies of applications using the Auth0 Wordpress plugin configured with CookieStore have authentication tags that can be brute forced, which may result in unauthorized access. Am I Affected? You are affected by this vulnerability if you meet the following pre-conditions: 1. Applications using the Auth0 WordPress Plugin with version <=5.2.1 2.

Published May 17, 2025

Affected packages

auth0/wordpress

Ecosystem
Composer (PHP)
Affected
< 5.3.0
Fixed in
5.3.0
Check
composer show auth0/wordpress

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Overview Session cookies of applications using the Auth0 Wordpress plugin configured with CookieStore have authentication tags that can be brute forced, which may result in unauthorized access.

Am I Affected? You are affected by this vulnerability if you meet the following pre-conditions:

  1. Applications using the Auth0 WordPress Plugin with version <=5.2.1
  2. Auth0 WordPress Plugin uses the Auth0-PHP SDK with version 8.0.0-BETA1 or higher and below 8.14.0.
  3. Session storage configured with CookieStore.

Fix Upgrade Auth0/wordpress plugin to v5.3.0. As an additional precautionary measure, we recommend rotating your cookie encryption keys. Note that once updated, any previous session cookies will be rejected.

Acknowledgement Okta would like to thank Félix Charette for discovering this vulnerability.

Credited to Sideni.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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