CVE-2026-16747

Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions

Published Aug 12, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
The Kirki WordPress plugin before 6.2.1 does not properly authorise its front-end form submission REST routes and passes attacker-controlled input through shortcode execution, allowing unauthenticated users to run any shortcode registered on the site, which on a default install leads to disclosure of the site administrator's email address and an arbitrary-recipient mail relay from the victim's domain.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Kirki
Kirki kirki
Wordpress
Wordpress wordpress
Vendors & Products Kirki
Kirki kirki
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Weaknesses CWE-74
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The Kirki WordPress plugin before 6.2.1 does not properly authorise its front-end form submission REST routes and passes attacker-controlled input through shortcode execution, allowing unauthenticated users to run any shortcode registered on the site, which on a default install leads to disclosure of the site administrator's email address and an arbitrary-recipient mail relay from the victim's domain.
Title Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Aug 12, 2026, 12:12 PM
Reserved
Jul 23, 2026, 12:09 PM
Status
Deferred
Published
Aug 12, 2026, 12:17 PM
Modified
Aug 26, 2026, 4:30 PM