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WPFunnels Pro EUVDEUVD-2026-37624

| CVE-2026-49778 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-06-17 Patchstack
7.1
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify site running WPFunnels Pro ≤2.9.4
  2. Delivery
    Craft URL with XSS payload
  3. Exploit
    Deliver link to WordPress admin
  4. Execution
    Victim clicks, script executes in admin session
  5. Persist
    Steal cookie or create rogue admin
  6. Impact
    Persist backdoor in site

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires a WordPress site running WPFunnels Pro at version 2.9.4 or earlier with funnel pages or affected endpoints reachable by the attacker, and per CVSS UI:R it requires the victim to perform an action such as clicking a crafted link or loading a page that includes the malicious input. No authentication is needed by the attacker (PR:N), but meaningful impact such as administrative takeover requires the victim to be an authenticated high-privilege WordPress user at the moment of script execution; targeting an anonymous site visitor yields only browser-context impact on that user.

Impact

The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L) indicates remote, unauthenticated exploitation with low complexity, but requires victim interaction such as clicking a crafted link or visiting a malicious funnel page. The scope change (S:C) is what pushes the score to 7.1 - script executes in the security context of the WordPress site, enabling session theft against logged-in administrators and arbitrary actions on their behalf. EPSS and KEV data were not provided in the input, and no POC reference is included, so likelihood of mass exploitation is unconfirmed; however, WordPress plugin XSS is routinely weaponized in automated campaigns once disclosed, so it should be treated as a high-priority patch for any site running funnel pages on the public internet.

Exploit ScenarioDerived

An attacker crafts a URL or funnel page parameter containing a JavaScript payload targeting the vulnerable WPFunnels Pro endpoint, then distributes it via phishing email, forum post, or malvertising. When a logged-in WordPress administrator clicks the link, the script executes in their browser session and silently creates a new admin account or exfiltrates the authentication cookie. No public POC is referenced in the available data, but XSS against WordPress plugins is trivial to weaponize once the injection point is known.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 17, 2026

Stored or reflected cross-site scripting in WPFunnels Pro WordPress plugin versions 2.9.4 and earlier allows unauthenticated remote attackers to inject malicious script that executes in a victim's browser when they interact with crafted content. The CVSS 3.1 score of 7.1 reflects the scope-changed impact (S:C) on the WordPress site, including potential session hijacking of administrators. No public exploit identified at time of analysis and the issue is not listed in CISA KEV.

RemediationAI

Upgrade WPFunnels Pro to the version released after 2.9.4 as documented in the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/wpfunnels-pro/vulnerability/wordpress-wpfunnels-pro-plugin-2-9-4-cross-site-scripting-xss-vulnerability); no specific fixed version is stated in the available input, so verify the exact patched release on the vendor changelog before deploying. If immediate patching is not possible, deploy a WAF rule (Patchstack, Wordfence, or equivalent) to filter script-like payloads on plugin endpoints, restrict access to funnel pages to authenticated users where feasible, and enforce a strict Content-Security-Policy that disallows inline scripts - noting that CSP may break legitimate inline scripts that WPFunnels itself injects into funnel pages and should be tested in staging. Administrators should also rotate sessions and reset credentials if exploitation is suspected.

Affected VersionsENISA

WPFunnels Pro n/a ≤2.9.4

Affected Packages

euvd wpfunnels_pro no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

WPFunnels Pro is a commercial sales-funnel builder plugin for WordPress used to construct multi-step checkout, opt-in and upsell flows. The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation), meaning user-controlled input reaches an HTML/JavaScript context without proper output encoding or sanitization. Because the CPE wildcard 'cpe:2.3:a:wpfunnels:wpfunnels_pro:*' covers all versions through 2.9.4, the vulnerable sink is likely a long-standing template, shortcode, or AJAX endpoint that renders attacker-supplied data into pages served by the plugin's funnel front-end.

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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 network-reachable XSS requiring victim click (UI:R); script runs in WordPress origin causing scope change with limited C/I/A impact on the admin session.

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

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

DescriptionCVE.org

Unauthenticated Cross Site Scripting (XSS) in WPFunnels Pro <= 2.9.4 versions.

Executive ViewAI

Why It Matters

WPFunnels Pro WordPress plugin versions 2.9.4 and earlier contain a stored or reflected XSS vulnerability allowing unauthenticated attackers to inject malicious scripts into affected installations. Attackers could hijack administrator sessions, compromise site data, and modify site content. No patch is currently available from the vendor.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: disable WPFunnels Pro plugin until patch availability confirmed; implement Web Application Firewall rules to block script injection patterns; restrict plugin access to trusted administrators only; enable enhanced logging and monitoring of administrator account activity; consider alternative WordPress funnel/marketing plugins as contingency solution.

Threat Intelligence Overview

EPSS Score
0.2%
Top 92% exploitable
Social Media
2
Sightings
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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