XSS in Funnelkit Funnel Builder
CVE-2024-1056
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (16.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Funnelkit Funnel_builder
- Funnelkit Funnel Builder Pro — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@wordfence.com (Third Party Advisory)
- security@wordfence.com (Release Notes)
Frequently asked questions
- What is CVE-2024-1056?
- CVE-2024-1056 is a medium-severity vulnerability in Funnelkit Funnel Builder, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2024-08-29.
- How severe is CVE-2024-1056?
- Medium severity. CVSS v3 base score is 6.4 out of 10.
- Is CVE-2024-1056 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.