Inadequate Authorization in Kirki WordPress Plugin Allows Unauthorized Shortcode Execution
CVE-2026-16747

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Kirki
Vendor
CVE Published:
12 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16747?

The Kirki WordPress plugin prior to version 6.2.1 is susceptible to inadequate authorization that affects its front-end form submission REST routes. This vulnerability allows unauthenticated attackers to exploit the system by executing any registered shortcodes, which can lead to significant issues such as the unauthorized disclosure of the site's administrator email addresses and the potential for arbitrary mail relay, revealing sensitive information from the victim's domain.

Affected Version(s)

Kirki 0 < 6.2.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-16747 - Proof of Concept

References

https://wpscan.com/vulnerability/4330c6e0-071e-49d6-b1ec-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.