GHSA-vcgg-hp4r-87gx
CRITICALContao Does Not Invalidate Existing Sessions When Password Changes
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.
Blast Radius
contao/contao🐘contao/contao🐘contao/core-bundle🐘contao/core-bundle🐘contao/coreReal-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
Security researcher Ali Razzaq has discovered that existing sessions are not correctly invalidated when a user changes their password in the backend or frontend.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | contao/contao | ≥ 4.0.0&&< 4.4.37 | 4.4.37 |
| 🐘Packagist | contao/contao | ≥ 4.5.0&&< 4.7.3 | 4.7.3 |
| 🐘Packagist | contao/core-bundle | ≥ 4.0.0&&< 4.4.37 | 4.4.37 |
| 🐘Packagist | contao/core-bundle | ≥ 4.5.0&&< 4.7.3 | 4.7.3 |
| 🐘Packagist | contao/core | ≥ 3.0.0&&< 3.5.39 | 3.5.39 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for contao/contao. 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 contao/contao to 4.4.37 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vcgg-hp4r-87gx 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-vcgg-hp4r-87gx 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-vcgg-hp4r-87gx. 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-vcgg-hp4r-87gx in your dependencies?
O3 detects GHSA-vcgg-hp4r-87gx across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.