GHSA-39j2-4p9j-5w4j
Ez Platform Object Injection in legacy shop module
Blast Radius
ezsystems/ezpublish-legacy🐘ezsystems/ezpublish-legacy🐘ezsystems/ezpublish-legacyReal-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
This Security Advisory is about a vulnerability in the Legacy shop module. A backend editor could perform object injection in discount rules. This would require backend access and permission to edit discount rules. While object injection in itself is a serious vulnerability, the permission requirement means that normally only administrators would be able to exploit it, that's why it was classified as Medium severity.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | ezsystems/ezpublish-legacy | ≥ 2019.3.0&&< 2019.3.5.1 | 2019.3.5.1 |
| 🐘Packagist | ezsystems/ezpublish-legacy | ≥ 2017.12.0&&< 2017.12.7.3 | 2017.12.7.3 |
| 🐘Packagist | ezsystems/ezpublish-legacy | ≥ 5.4.0&&< 5.4.14.2 | 5.4.14.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ezsystems/ezpublish-legacy. 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 ezsystems/ezpublish-legacy to 2019.3.5.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-39j2-4p9j-5w4j 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-39j2-4p9j-5w4j 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-39j2-4p9j-5w4j. 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-39j2-4p9j-5w4j in your dependencies?
O3 detects GHSA-39j2-4p9j-5w4j across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.