What’s Vulnerable › Vulnerabilities
CVE-2026-16747: Kirki < 6.2.1 - Unauthenticated Arbitrary Shortcode Execution via Form Email Actions
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-12 · updated 2026-08-26
- Weakness: CWE-74
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.
Affected products
- Kirki: before 6.2.1 — fixed in 6.2.1
How to fix
Upgrade to a fixed version: Kirki 6.2.1. Check the vendor advisory for mitigations.
References
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