CISA Warns of Active Exploitation of WordPress Core Vulnerability

Published: 4 Nov 2026 · United States

CISA has confirmed hackers are exploiting a high-severity WordPress Core flaw (CVE-[phone number]) during software upgrades. This TOCTOU race condition vulnerability allows attackers to execute arbitrary code on affected systems.

Who is at risk

WordPress site administrators and users in the US

How to protect yourself

• Apply WordPress updates immediately when released
• Monitor sites for unusual activity during upgrades
• Use security plugins to detect and block exploits

Source: The Hacker News (thehackernews.com)

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