CVE-2026-62029

WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell <= 3.13.3 - Authenticated (Contributor+) Stored Cross-Site Scripting

2026-10-09 00:00

Strategic Overview

Status: Unpatched
Affected Plugin: WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell
Affected Version: <= 3.13.3
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-62029

View all WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell vulnerabilities

At a glance

CVE-2026-62029 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WPFunnels WordPress plugin, affecting versions <= 3.13.3. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed October 2026, reported by nh4tvd.

Vulnerability Overview

The WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.13.3. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in WPFunnels <= 3.13.3 takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. No fixed build of this plugin is recorded for WPFunnels yet, so installs running <= 3.13.3 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-62029 https://www.wordfence.com/threat-intel/vulnerabilities/id/f3ff1bb7-bb90-45a9-8ed1-1497aed14b4d https://nvd.nist.gov/vuln/detail/CVE-2026-62029

Related records

Same weakness class

Other vulnerabilities in WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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