Everest Forms Vulnerability Exploited to Hack WordPress Sites
Everest Forms Pro plugin vulnerability exploited to hack WordPress sites.
A critical vulnerability (CVE-2026-3300) in the Everest Forms Pro WordPress plugin, affecting over 100,000 sites, has been actively exploited for two months. Attackers can inject and execute arbitrary PHP code, enabling them to create admin accounts or deploy web shells for full site takeover. The flaw was patched in version 1.9.13.
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The lesson from this incident
Full lessonThe Everest Forms Pro plugin vulnerability demonstrates how a single flaw can compromise entire websites through PHP code injection. Attackers exploited this critical vulnerability for two months, creating admin accounts and deploying web shells for complete site control. With over 100,000 affected sites, this incident highlights the massive attack surface created by third-party plugins. Organizations must treat plugin security with the same rigor as core application security to prevent such widespread compromise.
What helps against this
How we list vendors- Automated patch management
Known holes get closed in days, not months.
- Endpoint detection and response (EDR and XDR)
Malware and hands-on-keyboard attackers on laptops and servers get spotted and stopped.
Indicators of Compromise
Extracted by AI from the linked source. Not reviewed by an editor. How this works
- cve — CVE-2026-3300
- malware — web shells