GHSA-fm68-89m8-4gjj
MEDIUMGHSA-fm68-89m8-4gjj is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in magento/community-edition. O3 Security confirms whether GHSA-fm68-89m8-4gjj is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Composer JavaScript injection possible via html comments
Real-World Exposure
magento/community-edition🐘magento/community-editionReal-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
In Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1, an unauthenticated user can inject arbitrary JavaScript code as a result of the sanitization engine ignoring HTML comments.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | magento/community-edition | ≥ 2.2&&< 2.2.10 | 2.2.10 |
| 🐘Packagist | magento/community-edition | ≥ 2.3&&< 2.3.3 | 2.3.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for magento/community-edition. 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 magento/community-edition to 2.2.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fm68-89m8-4gjj 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-fm68-89m8-4gjj 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-fm68-89m8-4gjj. 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-fm68-89m8-4gjj in your dependencies?
O3 detects GHSA-fm68-89m8-4gjj across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.