Quick answers
- Is CVE-2026-12979 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-12979 being exploited in the wild.
- How severe is CVE-2026-12979?
- Informational severity, with a CVSS score of 5.5, published 16 July 2026.
- Which products and versions are affected?
- FunnelKit Funnel Builder < 3.15.0.6.
- Is there a fix for CVE-2026-12979?
- 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-2026-12979 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-12979?
- Check whether you run FunnelKit Funnel Builder 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 path traversal vulnerability exists in the FunnelKit Funnel Builder plugin's template importer. The 'step-import' REST handler fails to sanitize the 'builder' and 'template' request parameters, which are passed to the WFFN_Template_Importer::import_remote() method. By using '../' sequences, an authenticated user with administrator privileges (manage_options capability) can traverse outside the intended directory. The plugin then uses wp_delete_file() on the resulting path with a hard-coded .json extension. This allows for the deletion of any .json file reachable by the web server user, potentially leading to a denial of service or the disabling of other plugins and themes. The issue is fixed in version 3.15.0.6.
Affected products
- FunnelKit FunnelKit Funnel Builder < 3.15.0.6
Timeline
- 2026-06-25: disclosed: Publicly published by WPScan
- 2026-07-16: advisory: NVD published date