# CVE-2026-84221: Kirki WordPress plugin SQL injection in Content Manager

Source: https://junglewise.ai/threats/cve-2026-84221-kirki-wordpress-plugin-sql-injection-in-content-manager  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-05. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84221 · Severity: medium · CVSS 6.8 · Published 2026-09-05

Kirki is a popular WordPress plugin for managing custom content and settings. A SQL injection flaw in versions before 6.3.0 allows WordPress editors and higher-privileged users to inject arbitrary SQL queries through unescaped field identifiers, potentially exposing the entire WordPress database including user credentials, password hashes, and sensitive content.

## Quick answers

**Is CVE-2026-84221 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84221 being exploited in the wild.

**How severe is CVE-2026-84221?** Medium severity, with a CVSS score of 6.8, published 5 September 2026.

**Which products and versions are affected?** Kirki Kirki 6.0.0 to 6.2.5.

**Is there a fix for CVE-2026-84221?** A patch was published on 2026-09-05: 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-2026-84221 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-84221?** 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

The vulnerability is a SQL injection (CWE-89) in the Content Manager feature of Kirki. An authenticated attacker with editor-level access or above can craft a malicious field ID containing SQL code when creating reference fields in collections. The vulnerable code concatenates this user-supplied identifier directly into SQL queries without parameterization. The injection point is triggered when searching collections with filters applied. An attacker can use time-based blind SQL injection (SLEEP queries) to exfiltrate data or UNION-based injection to directly extract database contents including WordPress user credentials. The plugin concatenates field identifiers while other queries against the same table use proper parameter binding, indicating a localized implementation oversight. Fix: upgrade to version 6.3.0 or later, which implements parameterized queries for all field identifiers.

## Affected products

- Kirki Kirki 6.0.0 to 6.2.5

## Timeline

- 2026-09-03: disclosed
- 2026-09-05: patched: Fixed in version 6.3.0

## References

- [https://wpscan.com/vulnerability/6c34da62-46fb-4dd4-a433-bd3df4d9fcfd/](https://wpscan.com/vulnerability/6c34da62-46fb-4dd4-a433-bd3df4d9fcfd/)