GHSA-w3wc-44p4-m4j7
HIGHGHSA-w3wc-44p4-m4j7 is a high-severity (CVSS 8.2) CWE-331 vulnerability in auth0/auth0-php. O3 Security confirms whether GHSA-w3wc-44p4-m4j7 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Auth0 PHP SDK has Insufficient Entropy in Cookie Encryption
Blast Radius
auth0/auth0-phpReal-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
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?
Consumers are affected if their application meets the following preconditions:
- Their application is using the Auth0-PHP SDK, versions between 8.0.0 and 8.18.0
- Their application is using the Auth0-PHP SDK, or the following SDKs that rely on the Auth0-PHP SDK:
- Auth0/symfony,
- Auth0/laravel0-auth0, or
- Auth0/wordpress
Resolution
Upgrade Auth0/Auth0-PHP to version 8.19.0 or greater.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | auth0/auth0-php | ≥ 8.0.0&&< 8.19.0 | 8.19.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for auth0/auth0-php. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update auth0/auth0-php to 8.19.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w3wc-44p4-m4j7 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.
How O3 protects you
O3 pinpoints whether GHSA-w3wc-44p4-m4j7 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-w3wc-44p4-m4j7. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-w3wc-44p4-m4j7 in your dependencies?
O3 detects GHSA-w3wc-44p4-m4j7 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.