GHSA-hvgw-gg3p-295j
GHSA-hvgw-gg3p-295j is a security vulnerability in klaviyo/magento2-extension. O3 Security confirms whether GHSA-hvgw-gg3p-295j is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Read private customer data reclaiming carts in Klaviyo Magento
Blast Radius
klaviyo/magento2-extensionReal-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
A researcher identified an endpoint in a thirth party module Klaviyo Magento 2 which allows to read private customer data from stores. It works by reclaiming any guest-cart as your own and reading the private data for the orders in the Magento API.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | klaviyo/magento2-extension | ≥ 1.0.0&&< 3.0.0 | 3.0.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for klaviyo/magento2-extension. 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 klaviyo/magento2-extension to 3.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hvgw-gg3p-295j 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-hvgw-gg3p-295j 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-hvgw-gg3p-295j. 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-hvgw-gg3p-295j in your dependencies?
O3 detects GHSA-hvgw-gg3p-295j across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.