CVE-2026-74992: Kirki < 6.2.3 - Editor+ Stored XSS via Font Zip Upload
The Kirki WordPress plugin before 6.2.3 does not properly validate the files contained in archives uploaded by users with the Editor role, and does not remove all unwanted files after extracting them, allowing such users to upload arbitrary files to a web accessible directory, leading to Stored XSS as well as RCE on some server configurations.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
WordPress Kirki pluginto a version that resolves this vulnerability.Fixed in 6.2.3 - Compensating control
Prevent Editor-role users from uploading/using the WordPress editor features that allow archive/font ZIP uploads to web-accessible directories until the Kirki plugin is upgraded to 6.2.3.
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated user with the WordPress Editor role can exploit the vulnerable font ZIP upload handling.
Are sites affected under the default configuration?
The available information does not establish whether the affected upload functionality is enabled or reachable in a default installation. Exposure depends on whether Editor-role users can use the relevant font archive upload feature.
What impact is possible beyond stored cross-site scripting?
The issue allows arbitrary files to be uploaded to a web-accessible directory. On some server configurations, this can lead to remote code execution.
What should be done if updating is not immediately possible?
Restrict the Editor role to trusted users and prevent those users from accessing or using the affected font ZIP upload capability where possible. Review files extracted into web-accessible upload locations for unexpected or unwanted file types.