GHSA-484f-743f-6jx2 is a medium-severity (CVSS 4.4) Code Injection vulnerability in phpfastcache/phpfastcache. O3 Security confirms whether GHSA-484f-743f-6jx2 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Object injection in cookie driver in phpfastcache
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-484f-743f-6jx2 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 365,433 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
phpfastcache/phpfastcacheReal-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
An possible object injection has been discovered in cookie driver prior 5.0.13 versions (of 5.x releases).
Patches
The issue has been addressed by enforcing JSON conversion when deserializing
Workarounds
If you can't fix it, use another driver such as "Files" (Filesystem)
References
Fixing release: https://github.com/PHPSocialNetwork/phpfastcache/releases/tag/5.0.13
For more information
If you have any questions or comments about this advisory:
- Open an issue in the issue tracker
- Email us at [email protected]
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | phpfastcache/phpfastcache | ≥ 5.0.0&&< 5.0.13 | 5.0.13 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpfastcache/phpfastcache. 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 phpfastcache/phpfastcache to 5.0.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-484f-743f-6jx2 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-484f-743f-6jx2 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-484f-743f-6jx2. 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-484f-743f-6jx2 in your dependencies?
O3 detects GHSA-484f-743f-6jx2 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.