GoKawiilSiteGuard Server Edition WAF hit by actively exploited command-injection flaw
Security researchers and Japan's JPCERT/CC report that attackers are actively exploiting CVE-2026-106931, a critical OS command-injection bug in the statistics feature of SiteGuard Server Edition, a web application firewall used on roughly 500,000 to 1.5 million sites. The flaw lets attackers run commands with root or SYSTEM privileges on hosts where the default-enabled statistics function is active, and the vendor has released patches for multiple affected versions, including some end-of-life builds.