WAF - WAF Release - 2026-09-10 - Emergency

<p>This update provides immediate defense against a high-severity, actively exploited zero-day vulnerability targeting Adobe Commerce and Magento Open Source storefronts.</p> <p><strong>Key Findings</strong></p> <ul> <li>Adobe Commerce and Magento RCE (CVE-2026-75650 / "StyleSmuggler"): Unauthenticated Remote Code Execution (RCE) vulnerability caused by improper neutralization of special elements in the platform's template engine. Unauthenticated attackers can inject arbitrary PHP payloads through style properties to execute system commands and deploy persistent malware.</li> </ul> <p><strong>Impact</strong></p> <p>This emergency rule provides immediate edge-level mitigation and virtual patching, origin applications must be urgently updated. We strongly recommend to apply the hotfix outlined in Adobe Security Bulletin <a href="https://experienceleague.adobe.com/en/docs/commerce-knowledge-base/kb/announcements/commerce-apsb26-146">APSB26-146</a> and immediately rotate all potentially exposed encryption keys, integration tokens, and system credentials, as patching alone does not remediate an existing compromise.</p> <table style="width: 100%"><thead><tr><th>Ruleset</th><th>Rule ID</th><th>Legacy Rule ID</th><th>Description</th><th>Previous Action</th><th>New Action</th><th>Comments</th></tr></thead><tbody><tr><td>Cloudflare Managed Ruleset</td><td><span class="rule-id" data-rule-id="f9a3026b0fdc4d63b7338346440f5c55"><button type="button" title="Copy rule ID" aria-label="Copy rule ID f9a3026b0fdc4d63b7338346440f5c55" class="border-border bg-muted hover:border-foreground/30 hover:bg-accent inline-flex cursor-copy items-center rounded-md border px-1.5 py-0.5 transition-colors duration-150"><span class="font-mono text-[0.8125rem] font-medium">...440f5c55</span></button></span></td><td>N/A</td><td>Adobe Commerce - Remote Code Execution - CVE:CVE-2026-75650</td><td>N/A</td><td>Block</td><td><p>This is a new detection.</p></td></tr></tbody></table>