---
id: CVE-2026-15601
title: >-
  The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for
  WordPress is vulnerable to Path Traversal (Zip Slip) in all versions up to,
  and including, 6.0.13 via the extract_zip_file function
summary: >-
  The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for
  WordPress is vulnerable to Path Traversal (Zip Slip) in all versions up to,
  and including, 6.0.13 via the extract_zip_file function. This makes it
  possible for au…
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-22
published: '2026-08-01'
updated: '2026-08-01'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15601'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Http/Controllers/Api/AppsController.php#L27
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Services/AppsService.php#L113
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Services/AppsService.php#L186
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Supports/FileHandler.php#L90
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/includes/Ajax/Apps.php#L176
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/routes/api.php#L77
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Http/Controllers/Api/AppsController.php#L27
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Services/AppsService.php#L113
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Services/AppsService.php#L186
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Supports/FileHandler.php#L90
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/includes/Ajax/Apps.php#L176
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/routes/api.php#L77
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3617070%40kirki&new=3617070%40kirki
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/4ccd1314-b9b9-4f63-820c-2817a4932ee8?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.0114
epssPercentile: 0.65196
ingestedAt: '2026-08-02T05:17:48.017Z'
---

## Overview

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Path Traversal (Zip Slip) in all versions up to, and including, 6.0.13 via the extract_zip_file function. This makes it possible for authenticated attackers, with custom-level access and above, to write arbitrary files on the server, which can allow for remote code execution. The install_app, update_app, and get_kirki_template_from_zip code paths accept a user-supplied app src value to construct the download URL, and no sanitization is applied to prevent a crafted ZIP from being fetched and extracted with path-traversing entry names that escape the intended destination directory.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.