CVE-2026-57374: Wisetr Funnel Kit Funnel Builder PRO unauthenticated XSS

CVE-2026-57374 · Severity: high · CVSS 7.1 · Published 2026-07-23

Funnel Kit Funnel Builder PRO, a WordPress plugin used to create sales funnels and marketing pages, is vulnerable to a security flaw that allows attackers to inject malicious scripts into the website. If a site administrator or visitor clicks a specially crafted link, the attacker could potentially hijack sessions, redirect users to malicious websites, or deface the site. This vulnerability can be exploited by unauthenticated users, posing a risk to the site's reputation and user data.

Vendors: FunnelKit.

Quick answers

Is CVE-2026-57374 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-57374 being exploited in the wild.
How severe is CVE-2026-57374?
High severity, with a CVSS score of 7.1, published 23 July 2026.
Which products and versions are affected?
FunnelKit Funnel Kit Funnel Builder PRO <= 3.15.0.7.
Is there a fix for CVE-2026-57374?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-57374 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-57374?
Check whether you run FunnelKit Funnel Kit Funnel Builder PRO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected Cross-Site Scripting (XSS) vulnerability exists in the Funnel Kit Funnel Builder PRO plugin for WordPress (versions 3.15.0.7 and below). The flaw stems from improper neutralization of user-supplied input during web page generation (CWE-79). An unauthenticated remote attacker can exploit this by tricking a user into interacting with a malicious link or form. Successful exploitation allows the execution of arbitrary JavaScript in the context of the victim's browser session, which can lead to session hijacking or unauthorized actions. The issue is resolved in version 3.15.0.8.

Affected products

  • Wisetr INC. Funnel Kit Funnel Builder PRO <= 3.15.0.7

Timeline

  • 2026-05-26: disclosed: Reported by dutafi
  • 2026-07-07: advisory: Patchstack advisory published
  • 2026-07-23: advisory: NVD published date

References

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