GHSA-8p5c-f836-m4h7
CRITICALGHSA-8p5c-f836-m4h7 is a critical-severity (CVSS 9.8) CWE-91 vulnerability in magento/community-edition. O3 Security confirms whether GHSA-8p5c-f836-m4h7 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Magento 2 Community Edition XML Injection
Blast Radius
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
An XPath entity injection vulnerability exists in Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An attacker can craft a GET request to page cache block rendering module that gets passed to XML data processing engine without validation. The crafted key/value GET request data allows an attacker to limited access to underlying XML data.
As per the Magento Release 2.3.3, if you have already implemented the pre-release version of this patch (2.3.2-p1), it is highly recommended to promptly upgrade to 2.3.2-p2.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | magento/community-edition | ≥ 2.2.0&&< 2.2.10 | 2.2.10 |
| 🐘Packagist | magento/community-edition | ≥ 2.3.0&&< 2.3.2-p2 | 2.3.2-p2 |
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-8p5c-f836-m4h7 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-8p5c-f836-m4h7 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-8p5c-f836-m4h7. 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-8p5c-f836-m4h7 in your dependencies?
O3 detects GHSA-8p5c-f836-m4h7 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.