What is CVE-2026-102772?

CVE-2026-102772 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-2026-102772?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Jtsternberg Cmb2

CVE-2026-102772

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-02 · last modified 2026-10-02.

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

Jtsternberg Cmb2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-102772?: CVE-2026-102772 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-2026-102772?: High severity. CVSS v3 base score is 7.2 out of 10.