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  5. GHSA-862m-5253-832r

GHSA-862m-5253-832r: Auth0 Wordpress Plugin vulnerable to Deserialization of Untrusted Data

June 5, 2025 (updated November 10, 2025)

Overview The Auth0 Wordpress plugin contains a critical vulnerability due to insecure deserialization of cookie data. If exploited, since SDKs process cookie content without prior authentication, a threat actor could send a specially crafted cookie containing malicious serialized data.

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

  1. Applications using the Auth0 WordPress plugin, versions between 5.0.0 BETA-0 to 5.0.1.
  2. Auth0 WordPress plugin uses the Auth0-PHP SDK with version 8.0.0-BETA3 to 8.3.0.

Fix Upgrade the Auth0 WordPress plugin to the latest version (v5.3.0).

References

  • github.com/advisories/GHSA-862m-5253-832r
  • github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492
  • github.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85q
  • github.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34
  • github.com/auth0/wordpress
  • github.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832r
  • nvd.nist.gov/vuln/detail/CVE-2025-48951

Code Behaviors & Features

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Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions starting from 5.0.0-BETA0 before 5.1.0

Fixed versions

  • 5.1.0

Solution

Upgrade to version 5.1.0 or above.

Impact 10 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-502: Deserialization of Untrusted Data

Source file

packagist/auth0/wordpress/GHSA-862m-5253-832r.yml

Spotted a mistake? Edit the file on GitLab.

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