Auth0 laravel-auth0 SDK has Insufficient Entropy in Cookie Encryption
Impact
In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies.
Am I Affected?
You are affected if you meet the following preconditions:
- Applications using laravel-auth0 SDK, versions between 7.0.0 and 7.20.0
- Laravel-auth0 SDK using the Auth0-PHP SDK versions between 8.0.0 to 8.18.0.
Resolution
Upgrade Auth0/laravel-auth0 to version 7.21.0 or greater.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | auth0/login | >= 7.0.0, < 7.21.0 | 7.21.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N- Weakness (CWE)
CWE-331- Platform
- Composer
- Package
auth0/login- Disclosed
- 03.04.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-fmg6-246m-9g2v - CC BY 4.0
Vulnerability history: auth0/login
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 05.2025 04.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
- Medium 1
- Low 1
Disclosures per year
- 2025: 4
- 2026: 1
-
Auth0 laravel-auth0 SDK has Insufficient Entropy in Cookie Encryption this entry
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