CMB2 vulnerabilities

Plugin slug cmb2 · 6 known vulnerabilities · latest disclosed 2026-10-27 · WordPress.org page

Every listed vulnerability has a fix. Version 2.13.5 or later is not affected by any of them. If your site runs an older version, update it.

3 of 6 rated high or critical (CVSS 7 or more).

Known vulnerabilities in CMB2

SeverityAffected versionsFixed inCVEPublishedDetails
Medium 5.4<= 2.13.42.13.5CVE-2026-1167612026-10-27Advisory
High 7.2<= 2.13.12.13.2CVE-2026-1027722026-10-01Advisory
High 7.2<= 2.13.02.13.1CVE-2026-973362026-10-01Advisory
Medium 6.4<= 2.13.02.13.1CVE-2026-972702026-09-30Advisory
Medium 4.3<= 2.12.02.13.0CVE-2026-803382026-09-22Advisory
High 7.5<= 2.10.12.11.0CVE-2024-17922024-04-03Advisory

Check if a site is affected

Enter a site address to see which version of CMB2 and other plugins it runs, and whether they match a known vulnerability.

Questions

Is the CMB2 plugin safe to use?

All 6 known issues are fixed in current versions (2.13.5 or later). Keeping it updated is what matters.

How do I check which version of CMB2 my site runs?

In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.

How do I fix a vulnerable plugin?

Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.

Check any WordPress site in one click while you browse: Add PluginPeek to Chrome