Vulnerability · Published Jun 3, 2025 · Assigned by GitHub_M
CVE-2025-48951Auth0-PHP SDK Deserialization of Untrusted Data vulnerability
Critical 9.3
In plain English
A critical-severity unsafe deserialization in auth0-PHP from auth0. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. Versions 8.0.0-BETA3 prior to 8.3.1 contain a 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. Applications using the Auth0-PHP SDK are affected, as are applications using the Auth0/symfony, Auth0/laravel-auth0, or Auth0/wordpress SDKs, because those SDKsrely on the Auth0-PHP SDK versions from 8.0.0-BETA3 until 8.14.0. Version 8.3.1 contains a patch for the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | auth0/auth0-php | 8.3.1 | GHSA-v9m8-9xxp-q492 |
Affected products (as reported)
Weakness: CWE-502 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
References
- https://github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492 x_refsource_CONFIRM
- https://github.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85q x_refsource_MISC
- https://github.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34 x_refsource_MISC
- https://github.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832r x_refsource_MISC
- https://github.com/auth0/auth0-PHP/commit/04b1f5daa8bdfebc5e740ec5ca0fb2df1648a715 x_refsource_MISC