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CVE-2026-15601

4.9 · MEDIUM

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…

Published Aug 1, 2026CWE-22EPSS 1.14%

Overview

CVE-2026-15601 is a medium-severity vulnerability. It was published on August 1, 2026 and has a CVSS 3.1 base score of 4.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Http/Controllers/Api/AppsController.php#L27Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Services/AppsService.php#L113Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Services/AppsService.php#L186Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.12/app/Supports/FileHandler.php#L90Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.12/includes/Ajax/Apps.php#L176Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.12/routes/api.php#L77Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Http/Controllers/Api/AppsController.php#L27Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Services/AppsService.php#L113Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Services/AppsService.php#L186Refplugins.trac.wordpress.org/browser/kirki/tags/6.0.13/app/Supports/FileHandler.php#L90

How CyberStrike helps

Frequently asked questions

What is CVE-2026-15601?

CVE-2026-15601 is a medium-severity vulnerability. It was published on August 1, 2026 and has a CVSS 3.1 base score of 4.9 (MEDIUM).

How severe is CVE-2026-15601?

This vulnerability has a CVSS 3.1 base score of 4.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-15601?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-15601?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-15601 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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