CVE-2026-4512

Description

The reCaptcha by WebDesignBy WordPress plugin before 2.0 does not sanitize or escape the Site Key setting before outputting it in a JavaScript string context via the grecaptcha_js() function. This allows administrators on multisite installations (who do not have the unfiltered_html capability) to inject arbitrary JavaScript that executes for all visitors to the WordPress login page.

PUBLISHED Reserved 2026-03-20 | Published 2026-04-23 | Updated 2026-04-23 | Assigner WPScan

Problem types

CWE-79 Cross-Site Scripting (XSS)

Product status

Credits

Mustafa Ahmed finder

WPScan coordinator

References

wpscan.com/...rability/6dfb4378-fe6a-4462-af10-8e7504e3d593/ exploit vdb-entry technical-description

cve.org (CVE-2026-4512)

nvd.nist.gov (CVE-2026-4512)

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