CVE-2025-48951

critical

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.

References

https://github.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832r

https://github.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34

https://github.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85q

https://github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492

https://github.com/auth0/auth0-PHP/commit/04b1f5daa8bdfebc5e740ec5ca0fb2df1648a715

Details

Source: Mitre, NVD

Published: 2025-06-03

Updated: 2025-06-04

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

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

Severity: Critical

EPSS

EPSS: 0.0006