CVE-2026-4512
WP reCaptcha by WebDesignBy < 2.0 – Admin+ Stored XSS
Vexday Risk Score
28Low
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Proof of concept
Public proof of concept exists, but not yet automated.
CVSS 3.5EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
23 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
Affected products
Unknown · reCaptcha by WebDesignBypublic PoCs found — 1
cve_referencewpscan.com/vulnerability/6dfb4378-fe6a-4462-af10-8e7504e3d593/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.