CVE-2025-48951
EPSS 0.16%Auth0-PHP SDK Deserialization of Untrusted Data vulnerability
Description
**Overview** The Auth0 PHP SDK contains 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. **Am I Affected?** You are affected by this vulnerability if you meet the following preconditions: 1. Applications using the Auth0-PHP SDK, versions between 8.0.0-BETA3 to 8.3.0. 2. Applications using the following SDKs that rely on the Auth0-PHP SDK versions between 8.0.0-BETA3 to 8.3.0: a. Auth0/symfony, b. Auth0/laravel-auth0, c. Auth0/wordpress. **Fix** Upgrade Auth0/Auth0-PHP to 8.3.1. **Acknowledgement** Okta would like to thank Andreas Forsblom for discovering this vulnerability.
Affected packages (4)
- Packagist/auth0/auth0-php>= 8.0.0-BETA3, < 8.3.1
- Packagist/auth0/login>= 7.0.0-BETA1, < 7.2.2
- Packagist/auth0/symfony>= 5.0.0-BETA0, < 5.1.0
- Packagist/auth0/wordpress>= 5.0.0-BETA0, < 5.1.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 (10)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-48951
- PATCHhttps://github.com/auth0/auth0-PHP
- PATCHhttps://github.com/auth0/laravel-auth0
- PATCHhttps://github.com/auth0/symfony
- PATCHhttps://github.com/auth0/wordpress
- WEBhttps://github.com/auth0/auth0-PHP/commit/04b1f5daa8bdfebc5e740ec5ca0fb2df1648a715
- WEBhttps://github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492
- WEBhttps://github.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85q
- WEBhttps://github.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34
- WEBhttps://github.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832r