GitHub Advisoryadvisory · Packagist

GHSA-vfpx-q664-h93m Auth0 WordPress Plugin has Insufficient Entropy in Cookie Encryption

HIGH Published 2026-04-03 Modified 2026-04-03 Official page ↗
Ecosystem
Packagist
Packages
auth0/wordpress
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Weaknesses
CWE-331
Reviewed
2026-04-03

Affected packages

• Packagist auth0/wordpress: >= 5.0.0-BETA0, < 5.6.0 → fixed in 5.6.0

Description

Impact In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies. Am I Affected? Consumers are affected if their application meets the following preconditions: • It is using the Auth0 WordPress Plugin, versions between 5.0.0-BETA0 and 5.5.0 • Auth0 WordPress plugin using the Auth0-PHP SDK versions between 8.0.0 to 8.18.0. Resolution Upgrade Auth0/wordpress to version 5.6.0 or greater.

Related

Weakness · CWE (1)

  • CWE-331 Insufficient Entropy weakness

References