Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Unauthenticated network-accessible AJAX endpoint; no special conditions; mandatory victim click (UI:R); XSS scope change affects browser confidentiality and integrity at Low.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
5DescriptionCVE.org
The King Addons for Elementor WordPress plugin before 51.1.76 does not escape a user-supplied grid setting before reflecting it into an HTML attribute in an unauthenticated AJAX response, allowing attackers to execute arbitrary JavaScript in the browser of a visitor who is tricked into loading a crafted page.
AnalysisAI
Reflected XSS in King Addons for Elementor (all versions before 51.1.76) permits unauthenticated attackers to inject and execute arbitrary JavaScript in a victim's browser by embedding a malicious payload in an unsanitized grid setting parameter reflected verbatim into an HTML attribute via an unauthenticated AJAX endpoint. The attack requires social engineering to deliver a crafted URL to a target user, with no privilege or authentication prerequisite on the server side. A publicly available exploit exists per WPScan; exploitation is not confirmed in CISA KEV, and EPSS at 0.17% (7th percentile) indicates limited observed exploitation at this time.
Technical ContextAI
King Addons for Elementor is a WordPress add-on plugin extending the Elementor page-builder (10M+ installs) with grid, widgets, and layout features. The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation - Cross-site Scripting): a user-supplied grid configuration parameter is accepted by an unauthenticated WordPress AJAX handler and reflected without sanitization or escaping into an HTML attribute in the response. Because the AJAX endpoint is publicly accessible (no authentication gate), any attacker can craft a URL that embeds a JavaScript payload in the parameter. When a victim loads that URL, the server echoes the payload into the rendered HTML and the browser executes it. Affected CPE: cpe:2.3:a:unknown:king_addons_for_elementor:*:*:*:*:*:*:*:* covering versions 0 through less than 51.1.76.
RemediationAI
Update King Addons for Elementor to version 51.1.76 or later via the WordPress admin dashboard (Plugins → Updates), which contains the vendor-released patch resolving the missing output escaping. This is the only confirmed fix; the exact patched version 51.1.76 is confirmed by WPScan and the EUVD advisory. If an immediate update is not operationally feasible, deactivate the plugin entirely - this eliminates exposure but disables all King Addons widgets on Elementor-built pages, which may break site layout. As a secondary compensating control, deploying a WAF rule to block reflected payloads (e.g., script tags, event handlers) in AJAX query parameters can reduce risk but should not substitute for patching, as WAF rules can be bypassed by encoding or evasion. Advisory references: https://wpscan.com/vulnerability/667d1f8d-fcdb-498f-abda-5655a5af7591/ and https://nvd.nist.gov/vuln/detail/CVE-2026-14841.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-51928
GHSA-x8v3-6454-g335