GHSA-c42h-56wx-h85q
laravel-auth0 SDK Deserialization of Untrusted Data vulnerability
GHSA-c42h-56wx-h85q is a critical vulnerability (CVSS 9.3) in auth0/login, published June 6, 2025. No source lists public exploit code. Fixed in auth0/login 7.2.2.
- Severity
- 9.3 CriticalCVSS 4.0, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
7.2.2auth0/login +1 more
Description
Overview The laravel-auth0 SDK 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:
- Applications using laravel-auth0 SDK, versions between 7.0.0-BETA1 to 7.2.1.
- Laravel-auth0 SDK uses the Auth0-PHP SDK with version 8.0.0-BETA3 to 8.3.0.
Fix Upgrade Auth0/laravel-auth0 to the latest version (v7.17.0).
Acknowledgement Okta would like to thank Andreas Forsblom for discovering this vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Affected packages
| Package | Affected | Fixed |
|---|---|---|
auth0/loginPackagist | 7.0.0-BETA1 to 7.2.1 | 7.2.2 |
auth0/loginPackagist | 7.0.0-BETA1 up to 7.2.2, plus listed versions 7.0.07.0.0-BETA27.0.17.1.07.2.07.2.1 | 7.2.2 |
What each source reports
GitHub Advisories Score used
laravel-auth0 SDK Deserialization of Untrusted Data vulnerability
Overview The laravel-auth0 SDK 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:
- Applications using laravel-auth0 SDK, versions between 7.0.0-BETA1 to 7.2.1.
- Laravel-auth0 SDK uses the Auth0-PHP SDK with version 8.0.0-BETA3 to 8.3.0.
Fix Upgrade Auth0/laravel-auth0 to the latest version (v7.17.0).
Acknowledgement Okta would like to thank Andreas Forsblom for discovering this vulnerability.
- Record
GHSA-c42h-56wx-h85q- CVSS 4.0
- 9.3 Critical
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 - Weakness
- CWE-502, CWE-1395
- Updated
- 2026-11-02
OSV
laravel-auth0 SDK Deserialization of Untrusted Data vulnerability
Overview The laravel-auth0 SDK 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:
- Applications using laravel-auth0 SDK, versions between 7.0.0-BETA1 to 7.2.1.
- Laravel-auth0 SDK uses the Auth0-PHP SDK with version 8.0.0-BETA3 to 8.3.0.
Fix Upgrade Auth0/laravel-auth0 to the latest version (v7.17.0).
Acknowledgement Okta would like to thank Andreas Forsblom for discovering this vulnerability.
- Record
GHSA-c42h-56wx-h85q- CVSS 4.0
- 9.3 Critical
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 - Weakness
- CWE-1395, CWE-502
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492
nvd.nist.gov/vuln/detail/CVE-2025-48951