Adobe Commerce PolyShell Attacks Breach Hundreds of Stores as Brotli Exploit Traffic Emerges

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added two vulnerabilities impacting Adobe Commerce and Magento, and Google’s Brotli decoder library to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation.

The vulnerabilities are listed below –

CVE-2026-111497 (CVSS score: 9.2) – An unchecked return value vulnerability in