# CVE-2026-84219: Kirki WordPress plugin unauthenticated stored XSS in HTML entity decoding

Source: https://junglewise.ai/threats/cve-2026-84219-kirki-wordpress-plugin-unauthenticated-stored-xss-in-html-entity  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-06. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84219 · Severity: high · CVSS 7.5 · Published 2026-09-06

The Kirki WordPress plugin is used to customize website appearance and functionality. Before version 6.3.0, it fails to properly decode certain HTML entities when rendering page comments, allowing attackers to inject malicious JavaScript code that executes in the browsers of anyone viewing affected pages—including administrators—potentially leading to account compromise and site-wide malware distribution.

## Quick answers

**Is CVE-2026-84219 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84219 being exploited in the wild.

**How severe is CVE-2026-84219?** High severity, with a CVSS score of 7.5, published 6 September 2026.

**Which products and versions are affected?** Kirki Kirki 6.2.1 to 6.2.5.

**Is there a fix for CVE-2026-84219?** A patch was published on 2026-09-06: Fixed in version 6.3.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-84219 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-84219?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a stored cross-site scripting (XSS) vulnerability in the HTML entity decoding logic of the Kirki plugin (CWE-79). The plugin does not validate all variations of HTML entities before rendering them, enabling unauthenticated attackers to inject malicious JavaScript through comment fields. The injected script persists in the database and executes whenever the comment is displayed to any site visitor, including administrators. Attack vectors include page comments shown in site headers, footers, or comment sections. The vulnerability is fixed in version 6.3.0.

## Affected products

- Kirki Kirki 6.2.1 to 6.2.5

## Timeline

- 2026-09-04: disclosed
- 2026-09-06: patched: Fixed in version 6.3.0

## References

- [https://wpscan.com/vulnerability/e95bd1e3-6f61-423f-add6-519e1ca7bf66/](https://wpscan.com/vulnerability/e95bd1e3-6f61-423f-add6-519e1ca7bf66/)