What is the CVSS score of EUVD-2026-36865?

EUVD-2026-36865 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.2%.

Which versions of Funnel Builder by FunnelKit are affected by EUVD-2026-36865?

The Funnel Builder by FunnelKit WordPress plugin (versions ≤ 3.15.0.2) contains an unauthenticated cross-site scripting vulnerability that allows attackers to inject malicious scripts into web pages…

How to fix or mitigate EUVD-2026-36865?

Within 24 hours: Identify all WordPress instances running FunnelKit plugin version 3.15.0.2 or earlier; document exposure level (publicly accessible sites vs. internal use). Within 7 days: Deploy Web Application Firewall (WAF) rules blocking script injection patterns; implement Content Security Policy headers; evaluate plugin criticality for your operations. Within 30 days: Establish weekly monitoring of FunnelKit security advisories; prepare patch deployment procedures; document all compensating controls in place and schedule review upon vendor patch release.

Funnel Builder by FunnelKit EUVD-2026-36865

| CVE-2026-48966 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-06-15 Patchstack

GHSA-r6wf-xf46-772h

XSS Funnel Builder By Funnelkit

7.1

CVSS 3.1 · Vendor: Patchstack

Severity by source

Vendor (Patchstack) PRIMARY

7.1 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

vuln.today AI

7.1 HIGH

Unauthenticated reflected XSS reachable over the network requires victim click (UI:R), executes in WordPress origin (S:C) with limited C/I/A impact bounded by victim privileges.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Jun 15, 2026 - 21:42 vuln.today

DescriptionCVE.org

Unauthenticated Cross Site Scripting (XSS) in Funnel Builder by FunnelKit <= 3.15.0.2 versions.

AnalysisAI

Unauthenticated stored/reflected cross-site scripting in the Funnel Builder by FunnelKit WordPress plugin (versions <= 3.15.0.2) allows remote attackers to inject malicious scripts that execute in a victim's browser when they visit a crafted page or link. The CVSS 3.1 score of 7.1 reflects a scope-changing impact with low confidentiality, integrity, and availability impact and required user interaction. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Technical ContextAI

The vulnerability is a CWE-79 (Improper Neutralization of Input During Web Page Generation) flaw in Funnel Builder by FunnelKit, a WordPress plugin used to build sales funnels, checkout pages, and marketing automation flows for WooCommerce. The affected CPE is cpe:2.3:a:funnelkit:funnel_builder_by_funnelkit covering all versions through 3.15.0.2. XSS in WordPress plugins typically results from unsanitized input being rendered without escaping in plugin-generated pages, shortcodes, or admin views, enabling attacker-controlled HTML/JavaScript to execute in a logged-in or anonymous user's browser session against the WordPress origin.

RemediationAI

Upgrade Funnel Builder by FunnelKit to a version newer than 3.15.0.2 once the vendor publishes a fixed release; refer to the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/funnel-builder/vulnerability/wordpress-funnel-builder-by-funnelkit-plugin-3-15-0-2-cross-site-scripting-xss-vulnerability for the patched version and vendor changelog. Patch status from input: patch availability not explicitly stated, so treat as no vendor-released patch independently confirmed at time of analysis and monitor the vendor changelog. As compensating controls until patched, consider deploying a WAF rule or Patchstack mitigation to filter XSS payloads against plugin endpoints, enforcing a strict Content-Security-Policy that disallows inline scripts on funnel pages (side effect: may break legitimate inline JS in funnels), restricting admin access to known IPs to limit phishing impact on privileged users, and training admins to avoid clicking unsolicited links to plugin URLs.