XSS in Jtsternberg Cmb2
CVE-2026-97336
The CMB2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'file_list' Field Type in all versions up to, and including, 2.13.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when an integrating plugin or theme registers a file_list field on a publicly accessible front-end form or a user meta box, as CMB2 is a developer library and does not expose these fields by default.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/2d61a1f1-137e-4856-b5ff-b1001…
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Utils.php
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/types/CMB2_Type_Fi…
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Sanitize.php
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/helper-functions.p…
- plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Hookup.php
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-97336?
- CVE-2026-97336 is a high-severity vulnerability in Jtsternberg Cmb2, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-10-02.
- How severe is CVE-2026-97336?
- High severity. CVSS v3 base score is 7.2 out of 10.