CVE-2026-102772 json
CMB2 <= 2.13.1 - Unauthenticated Stored Cross-Site Scripting via 'textarea_code' Field
published last mo. modified last mo. also EUVD-2026-91243
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
The CMB2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '<textarea_code field id> (e.g. kl_code, kl_post_code)' parameter in all versions up to, and including, 2.13.1 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. The front-end save path requires only a CMB2 box nonce, which is emitted to all visitors including unauthenticated guests via a simple GET request, making the attack trivially reachable without any credentials on sites that expose a public CMB2 form writing a textarea_code field.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- jtsternberg CMB2
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/338d824c-e99a-48c2-8844-4ca1104b5143?source=cve
- plugins.trac.wordpress.org /browser/cmb2/tags/2.13.1/includes/CMB2_Field_Display.php#L288
- plugins.trac.wordpress.org /browser/cmb2/tags/2.13.1/includes/CMB2_Sanitize.php#L464
- plugins.trac.wordpress.org /browser/cmb2/tags/2.13.1/includes/helper-functions.php#L320
- plugins.trac.wordpress.org /browser/cmb2/tags/2.13.1/includes/CMB2_Hookup.php#L900
- plugins.trac.wordpress.org /changeset?reponame=&old=3720258%40cmb2&new=3720258%40cmb2
Sources
- CVE List CVE-2026-102772
- NVD CVE-2026-102772
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.