This is one of two vulnerabilities in a combined chain that allows remote code execution on any stock WordPress installation. CVE-2026-63030 is the entry point — a route confusion bug in the REST API batch endpoint that bypasses authentication, allowing an attacker to invoke internal handlers without any permission check. When combined with CVE-2026-60137, the attacker gains the ability to read any data from the WordPress database with a single HTTP request. An exploit chain has been demonstrated which combines both of these bugs to achieve code execution.
WordPress 6.9.0–6.9.4 and 7.0.0–7.0.1 are affected. Update to WordPress 6.9.5 or 7.0.2 immediately. No plugins, user interaction, or non-default configuration is required to exploit. Given WordPress powers approximately 43% of all websites, the attack surface is enormous.
WordPress Core contains a pre-authentication route confusion vulnerability in the REST API batch endpoint that, combined with CVE-2026-60137, allows remote code execution.