# CVE-2026-97270: CMB2 Cross Site Scripting in subscriber functionality

Source: https://junglewise.ai/threats/cve-2026-97270-subscriber-cross-site-scripting-xss-in-cmb2-2-13-0-versions  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-97270 · Severity: medium · CVSS 6.5 · Published 2026-09-30

CMB2 is a custom fields library for WordPress that allows administrators to create and manage custom metadata. Versions up to 2.13.0 contain a Cross Site Scripting (XSS) vulnerability that can be exploited by subscriber-level users to inject malicious scripts into the site. An attacker could use this to steal visitor data, hijack user accounts, or perform unauthorized actions on the website.

Technologies: [CMB2](https://junglewise.ai/threats/technologies/cmb2-cmb2). Vendors: [CMB2](https://junglewise.ai/threats/vendors/cmb2).

## Quick answers

**Is CVE-2026-97270 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-97270 being exploited in the wild.

**How severe is CVE-2026-97270?** Medium severity, with a CVSS score of 6.5, published 30 September 2026.

**Which products and versions are affected?** CMB2 <= 2.13.0.

**Is there a fix for CVE-2026-97270?** A patch was published on 2026-09-30: Fixed in version 2.13.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-97270 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-97270?** Check whether you run CMB2 at an affected version. 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 reflected or stored XSS flaw in CMB2 that requires subscriber-level privileges and user interaction (such as a malicious link click) to trigger. The attack allows injection of arbitrary JavaScript that executes in the context of the WordPress site, potentially compromising visitor and user accounts. The vulnerability was fixed in version 2.13.1.

## Affected products

- CMB2 CMB2 <= 2.13.0

## Timeline

- 2026-09-30: disclosed
- 2026-09-30: patched: Fixed in version 2.13.1

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/cmb2/vulnerability/wordpress-cmb2-plugin-2-13-0-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/cmb2/vulnerability/wordpress-cmb2-plugin-2-13-0-cross-site-scripting-xss-vulnerability?_s_id=cve)

## Related threats

- [CMB2 WordPress plugin stored cross-site scripting in WYSIWYG field](https://junglewise.ai/threats/cve-2026-116761-the-cmb2-plugin-for-wordpress-is-vulnerable-to-stored-cross-site)
- [CMB2 stored cross-site scripting in file_list field](https://junglewise.ai/threats/cve-2026-97336-the-cmb2-plugin-for-wordpress-is-vulnerable-to-stored-cross-site)
- [CMB2 for WordPress stored cross-site scripting in textarea_code field](https://junglewise.ai/threats/cve-2026-102772-the-cmb2-plugin-for-wordpress-is-vulnerable-to-stored-cross-site)