Kirki <= 6.0.13 - Authenticated (Editor+) Path Traversal to Arbitrary File Write (Zip Slip)

Summary

CVE	CVE-2026-15601
State	PUBLISHED
Assigner	Wordfence
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-08-01 09:16:59 UTC
Updated	2026-08-03 19:16:43 UTC
Description	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.

Risk And Classification

Primary CVSS: v3.1 4.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.007670000 probability, percentile 0.519540000 (date 2026-08-02)

Problem Types: CWE-22 | CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Secondary	4.9	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N`
3.1	CNA	DECLARED	4.9	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N`

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Themeum	Kirki Freeform Page Builder Website Builder Customizer	affected 6.0.13 semver	Not specified

References

Reference	Source	Link	Tags
plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/includes/Ajax/Apps.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/routes/api.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Services/AppsService.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Supports/FileHandler.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Services/AppsService.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Http/Controllers/Api/AppsContro...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Http/Controllers/Api/AppsContro...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Services/AppsService.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Services/AppsService.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Supports/FileHandler.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/includes/Ajax/Apps.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kirki/tags/6.0.12/routes/api.php	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset	[email protected]	plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/4ccd1314-b9b9-4f63-820c-2817a...	[email protected]	www.wordfence.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: cuokon (en)

CNA: Wordfence PRISM (en)

Additional Advisory Data

Source	Time	Event
CNA	2026-07-13T14:51:52.000Z	Vendor Notified
CNA	2026-07-31T19:48:11.000Z	Disclosed

There are currently no legacy QID mappings associated with this CVE.