Unpatched Magento Zero-Day Exploited: Understanding the StyleSmuggler Threat
Attackers are exploiting a zero-day remote code execution flaw in Adobe Commerce and Magento Open Source, known as StyleSmuggler, to install persistent backdoors on e-commerce sites. This vulnerability is particularly concerning as it affects a large share of mid-market online retail and has been exploited in the wild since September 4, 2026, with no vendor fix available as of September 6, 2026.