Laravel Hijacked authentication cookies vulnerabilityGHSA-q4xf-7fw5-4x8v
GHSA-q4xf-7fw5-4x8v is a security vulnerability in illuminate/auth. A fix is available for illuminate/auth — see the affected versions and patch details below.
Real-World Exposure
illuminate/authReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Laravel 4.1.26 introduces security improvements for "remember me" cookies. Before this update, if a remember cookie was hijacked by another malicious user, the cookie would remain valid for a long period of time, even after the true owner of the account reset their password, logged out, etc.
This change requires the addition of a new remember_token column to your users (or equivalent) database table. After this change, a fresh token will be assigned to the user each time they login to your application. The token will also be refreshed when the user logs out of the application. The implications of this change are: if a "remember me" cookie is hijacked, simply logging out of the application will invalidate the cookie.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | illuminate/auth | ≥ 4.0.0&&< 4.1.26 | 4.1.26composer require illuminate/auth:^4.1.26 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for illuminate/auth, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update illuminate/auth to 4.1.26 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q4xf-7fw5-4x8v is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is GHSA-q4xf-7fw5-4x8v in your dependencies?
Find it across Packagist, including transitive dependencies.