# CVE-2026-18335: Kirki Freeform Page Builder blind server-side request forgery

Source: https://junglewise.ai/threats/cve-2026-18335-the-kirki-freeform-page-builder-website-builder-customizer-plugin  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-24. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-18335 · Severity: medium · CVSS 5.4 · Published 2026-09-24

Kirki is a page builder plugin for WordPress that lets website administrators customize their sites. The plugin has a vulnerability that allows unauthenticated attackers to make web requests from the website server to internal or external systems, potentially exposing sensitive data or allowing manipulation of internal services without directly accessing them.

Technologies: [Kirki Freeform Page Builder](https://junglewise.ai/threats/technologies/freeform-page-builder). Vendors: [Kirki](https://junglewise.ai/threats/vendors/kirki).

## Quick answers

**Is CVE-2026-18335 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18335 being exploited in the wild.

**How severe is CVE-2026-18335?** Medium severity, with a CVSS score of 5.4, published 24 September 2026.

**Which products and versions are affected?** Kirki Freeform Page Builder up to and including 6.2.0.

**Is there a fix for CVE-2026-18335?** 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-2026-18335 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-18335?** Check whether you run Kirki Freeform Page 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

The vulnerability is a blind server-side request forgery (SSRF) in the 'kirki_data' parameter that allows unauthenticated attackers to make arbitrary HTTP requests from the web application server. An attacker can probe internal network services, query metadata endpoints, or interact with backend systems without direct network access. The vulnerability affects all versions up to and including 6.2.0.

## Affected products

- Kirki Freeform Page Builder up to and including 6.2.0

## Timeline

- 2026-09-24: disclosed

## References

- [https://plugins.trac.wordpress.org/changeset/3636487/](https://plugins.trac.wordpress.org/changeset/3636487/)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/461be8a5-bf72-4028-88e6-bf6544120ac6?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/461be8a5-bf72-4028-88e6-bf6544120ac6?source=cve)

## Related threats

- [Kirki , Freeform Page Builder PHP Object Injection](https://junglewise.ai/threats/cve-2026-104734-the-kirki-freeform-page-builder-website-builder-customizer)
- [Kirki Freeform Page Builder Stored XSS in comment parameter](https://junglewise.ai/threats/cve-2026-17037-kirki-freeform-page-builder-stored-xss-in-comment-parameter)