CVE-2026-102772CMB2 <= 2.13.1 - Unauthenticated Stored Cross-Site Scripting via 'textarea_code' Field
Updated under an hour ago ()
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It affects jtsternberg CMB2. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.31%, higher than 22% of scored CVEs.
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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.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.31% (percentile 22)
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
jtsternberg CMB2 jtsternberg:cmb2 (from the name) | through 2.13.1 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/338d824c-e99a-48c2-8844-4ca1104b5143?source=cve
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.1/includes/CMB2_Field_Display.php#L288
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.1/includes/CMB2_Sanitize.php#L464
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.1/includes/helper-functions.php#L320
- https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.1/includes/CMB2_Hookup.php#L900
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3720258%40cmb2&new=3720258%40cmb2
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.