Auth0 WordPress has Improper Audience Validation via Auth0-PHP SDK Dependency
Description
In applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens.
Affected product and versions
Projects are affected if they meet the following preconditions:
- Applications using the Auth0 Wordpress plugin with version between 5.0.0-BETA0 and 5.4.0,
- Auth0 Wordpress plugin uses the Auth0-PHP SDK with versions between 8.0.0 and 8.17.0.
Resolution
Upgrade Auth0 Wordpress plugin to version 5.5.0 or greater.
Acknowledgement
Okta would like to thank Jafar Sadiq (iaf4r) for their discovery and responsible disclosure.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | auth0/wordpress | >= 5.0.0-BETA0, < 5.5.0 | 5.5.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-1395, CWE-863- Platform
- Composer
- Package
auth0/wordpress- Disclosed
- 17.12.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-vvg7-8rmq-92g7 - CC BY 4.0
Vulnerability history: auth0/wordpress
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 07.2024 04.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
- Medium 2
Disclosures per year
- 2024: 1
- 2025: 3
- 2026: 1
-
Auth0 WordPress has Improper Audience Validation via Auth0-PHP SDK Dependency this entry
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