CMB2 <= 2.13.0 - Unauthenticated Stored Cross-Site Scripting via 'file_list' Field Type
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| jtsternberg | CMB2 | up to 2.13.0 | — | No fix listed | CNA |
- CMB2 Vendorjtsternberg Affected up to 2.13.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-97336
- 2026-10-03 Alias added: GHSA-c4g5-wq6m-xp45
References
Other 9
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2d61a1f1-137e-4856-b5ff-b100143a8b47?source=cve
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Utils.php#L690
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/types/CMB2_Type_File_List.php#L51
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L617
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L748
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Sanitize.php#L100
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/helper-functions.php#L320
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Hookup.php#L953
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3712103%40cmb2&new=3712103%40cmb2
More jtsternberg vulnerabilities
- TI-2024-01668 CMB2 <= 2.10.1 - Authenticated (Contributor+) PHP Object Injection CVSS 3.1HIGH 7.5
- TI-2026-66010 CMB2 <= 2.13.1 - Unauthenticated Stored Cross-Site Scripting via 'textarea_code' Field CVSS 3.1HIGH 7.2
- TI-2024-12915 Code Snippets CPT <= 2.1.0 - Authenticated (Subscriber+) Arbitrary Shortcode Execution CVSS 3.1MEDIUM 6.3
- TI-2026-81759 Stored cross-site scripting in CMB2 WordPress plugin fields CVSS 3.1MEDIUM 5.4
Sources
- CVE-2026-97336 · CVE Program
- CVE-2026-97336 · NVD
- FIRST EPSS
- GHSA-c4g5-wq6m-xp45 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences