Security Flaw in Kirki Plugin Allows Malicious SVG File Uploads
CVE-2026-84223

6.8MEDIUM

Key Information:

Vendor

WordPress
Status
Kirki
Vendor
CVE Published:
20 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-84223?

The Kirki WordPress plugin prior to version 6.3.1 contains a vulnerability that permits unauthorized upload of unvalidated SVG files. This flaw allows users with author-level access and higher to upload SVGs that include embedded JavaScript, which is then served from the site's origin. As a result, this can lead to the unauthorized execution of scripts within the sessions of users who access the infected SVG files, potentially compromising site security.

Affected Version(s)

Kirki 6.0.0 < 6.3.1

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-2026-84223 - Proof of Concept

References

https://wpscan.com/vulnerability/02ed6d31-84f3-4723-8b49-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mohammed Abd Alrahman
WPScan
.