CVE-2026-17604: Kirki <= 6.1.1 - Authenticated (Editor+) Path Traversal to Arbitrary File Read via 'data' Parameter
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 6.1.1 via the 'data' parameter parameter. This makes it possible for authenticated attackers, with editor-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The intended strpos()-based guard against leaving the uploads directory is bypassed by crafting a URL that includes the uploads base path as a substring while embedding directory traversal sequences, such as /wp-content/uploads/../../wp-config.php.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2026-17604?
CVE-2026-17604 is a path traversal vulnerability in the Kirki plugin for WordPress, allowing authenticated users with editor-level access to read arbitrary files.
What is the severity of CVE-2026-17604?
The severity of CVE-2026-17604 is classified as medium, with a CVSS score of 4.9.
How do I fix CVE-2026-17604?
To fix CVE-2026-17604, update the Kirki plugin to version 6.1.2 or later.
Who is affected by CVE-2026-17604?
CVE-2026-17604 affects users of the Kirki plugin for WordPress, specifically those with authenticated editor-level access and above.
What can attackers do with CVE-2026-17604?
Attackers exploiting CVE-2026-17604 can use directory traversal to read arbitrary files on the server.