CVE-2025-47275
📋 TL;DR
This vulnerability allows attackers to brute-force authentication tags in session cookies of applications using Auth0-PHP SDK with CookieStore configuration, potentially leading to unauthorized access. It affects applications using Auth0-PHP SDK versions 8.0.0-BETA1 through 8.13.x, including those built with Auth0/symfony, Auth0/laravel-auth0, and Auth0/wordpress SDKs that rely on Auth0-PHP.
💻 Affected Systems
- Auth0-PHP SDK
- Auth0/symfony
- Auth0/laravel-auth0
- Auth0/wordpress
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain unauthorized administrative access to applications, leading to complete system compromise, data theft, or account takeover.
Likely Case
Attackers gain unauthorized user-level access to applications, potentially accessing sensitive user data or performing unauthorized actions.
If Mitigated
Attackers cannot brute-force cookies due to proper key rotation and patching, maintaining normal authentication security.
🎯 Exploit Status
Exploitation requires brute-forcing authentication tags, which is computationally intensive but feasible with sufficient resources.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.14.0
Vendor Advisory: https://github.com/auth0/auth0-PHP/security/advisories/GHSA-g98g-r7gf-2r25
Restart Required: Yes
Instructions:
1. Update Auth0-PHP to version 8.14.0 via composer update auth0/auth0-php. 2. Rotate cookie encryption keys. 3. Restart application services. 4. Test authentication functionality.
🔧 Temporary Workarounds
Switch to alternative session storage
allChange session storage from CookieStore to a more secure backend like database or Redis storage.
Modify application configuration to use a different session store (e.g., database, Redis) instead of CookieStore.
🧯 If You Can't Patch
- Implement rate limiting on authentication endpoints to hinder brute-force attempts.
- Deploy WAF rules to detect and block suspicious cookie manipulation patterns.
🔍 How to Verify
Check if Vulnerable:
Check composer.json or installed packages for Auth0-PHP version 8.0.0-BETA1 to 8.13.x and verify CookieStore is configured in session settings.Check Version:
composer show auth0/auth0-php | grep versionsVerify Fix Applied:
Confirm Auth0-PHP version is 8.14.0 or higher via composer show auth0/auth0-php and test that old session cookies are rejected.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts with manipulated cookies
- Unexpected session validation errors
Network Indicators:
- High volume of requests to authentication endpoints with varying cookie values
SIEM Query:
source="application_logs" AND (message="*authentication tag*" OR message="*cookie validation*" OR message="*session invalid*")🔗 References
- https://github.com/auth0/auth0-PHP/commit/52a79480fdb246f59dbc089b81a784ae049bd389
- https://github.com/auth0/auth0-PHP/releases/tag/8.14.0
- https://github.com/auth0/auth0-PHP/security/advisories/GHSA-g98g-r7gf-2r25
- https://github.com/auth0/laravel-auth0/security/advisories/GHSA-9fwj-9mjf-rhj3
- https://github.com/auth0/symfony/security/advisories/GHSA-9wg9-93h9-j8ch
- https://github.com/auth0/wordpress/security/advisories/GHSA-2f4r-34m4-3w8q
