CVE-2026-74992: CWE-79 Cross-Site Scripting (XSS) in Kirki
Description
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.
CVSS v3.1
Score 6.8medium
Affected software
Kirki
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Kirki WordPress plugin versions prior to 6.2.3 do not properly validate files within archives uploaded by users assigned the Editor role. Additionally, the plugin fails to remove all unwanted files after extracting these archives. This flaw enables such users to place arbitrary files into web-accessible directories, resulting in stored XSS vulnerabilities and, under certain server configurations, remote code execution.
Potential Impact
Attackers with Editor privileges can exploit this vulnerability to upload malicious files that execute stored XSS attacks, potentially compromising site visitors. On some server setups, this can escalate to remote code execution, allowing attackers to execute arbitrary code on the server.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Editor role permissions to prevent archive uploads or disable the Kirki plugin if possible. Monitor for updates from the Kirki plugin maintainers and apply patches promptly once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-17T12:17:35.726Z
- State
- PUBLISHED
Threat ID: 6a8699b9acd9273b49344186
Added to database: 08/20/2026, 06:07:53 UTC
Last enriched: 08/20/2026, 06:24:10 UTC
Last updated: 10/04/2026, 10:02:29 UTC
Views: 68
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