CVE-2025-3421

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{}

{"analysis": {"en": {"generated_at": "2026-04-21T21:21:34.248953+00:00", "value": {"mitigation_remediation": ["Upgrade the Everest Forms plugin to version 3.1.2 or newer, which includes the input sanitization fix for the 'form_id' parameter.", "If an upgrade cannot be performed immediately, block or strip the 'form_id' query parameter in your web application firewall or via WordPress settings to prevent the reflected payload.", "Enhance your site\u2019s security by enabling Wordfence or a similar Web Application Firewall and configuring it to detect and reject JavaScript payloads in URL query strings, specifically targeting the 'form_id' parameter."], "summary": {"action": "Patch Now", "impact": "Reflected Cross\u2011Site Scripting"}, "threat_synthesis": {"affected_systems": "The flaw affects every installation of the Everest Forms plugin for WordPress version 3.1.1 and older. Users who have not upgraded past 3.1.1 are vulnerable irrespective of site role or authentication status. Native WordPress environments that host the plugin remain at risk until the upgrade is performed.", "description_and_impact": "The vulnerability is a reflected cross\u2011site scripting flaw exposed through the 'form_id' query parameter in the Everest Forms WordPress plugin. Unsanitized input can be echoed back to the browser, enabling an unauthenticated attacker to inject arbitrary JavaScript that executes when a user views the reflected form. This allows theft of session data, credential hijacking, or malicious content delivery, directly compromising the confidentiality and integrity of end\u2011user browsers.", "risk_and_exploitability": "The CVSS base score of 6.1 indicates moderate severity, yet the EPSS score of less than 1% suggests a low exploitation probability at present. The flaw is not listed in the CISA KEV catalog. Attackers can exploit the issue by crafting a malicious URL containing a forged 'form_id' value and luring a visitor to click the link, which causes the injected script to run in the victim\u2019s browser."}}}}, "created": "2026-04-21T21:30:45.742380+00:00", "updated": "2026-04-21T21:30:45.742390+00:00", "vendors": []}