Published: July 19, 2026 Severity: Critical Executive Summary A critical vulnerability chain, publicly known as wp2shell , affects the WordPress Core REST Batch API . The issue enables an unauthenticated attacker to abuse the Batch API, trigger a SQL injection condition, and potentially achieve Remote Code Execution (RCE) . Unlike many WordPress compromises, this vulnerability does not require a vulnerable plugin or theme. The flaw exists within WordPress Core , meaning any internet-facing installation running an affected version may be vulnerable. The exposed endpoints include: /wp-json/batch/v1 /?rest_route=/batch/v1 WordPress addressed these vulnerabilities in security releases published on July 17, 2026 . Organizations should immediately upgrade to: WordPress 7.0.2 or later WordPress 6.9.5 or later WordPress 6.8.6 or later (related SQL injection fix) Temporary mitigations, such as WAF rules or application-layer protections, may reduce immediate exposure but are not substitutes ...
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