by Kastro
Paper/Archive/CVE-2025-48951

CVE-2025-48951

auth0 auth0-PHP — Auth0-PHP SDK Deserialization of Untrusted Data vulnerability

EPSS 0.8%CVSS 9.3
critical.is priorityof 100
39
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 55.0.550 × 2011.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
auth0-PHP>= 8.0.0-BETA3, < 8.3.1–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492refgithub.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85qrefgithub.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34refgithub.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832rrefgithub.com/auth0/auth0-PHP/commit/04b1f5daa8bdfebc5e740ec5ca0fb2df1648a715