The CMB2 WordPress plugin before 2.13.0 does not perform any capability check on one of its AJAX actions, allowing users with a role as low as Subscriber to create arbitrary WordPress options and corrupt existing ones, which can break core site settings and take the site offline.
Exploitation requires the site's or another CMB2 WordPress plugin before 2.13.0 to have declared an oEmbed field, as the CMB2 WordPress plugin before 2.13.0 registers none of its own. The stored value is never attacker-controlled, so the issue does not lead to privilege escalation.
Exploitation requires the site's or another CMB2 WordPress plugin before 2.13.0 to have declared an oEmbed field, as the CMB2 WordPress plugin before 2.13.0 registers none of its own. The stored value is never attacker-controlled, so the issue does not lead to privilege escalation.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 24 Sep 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cmb2
Cmb2 cmb2 Wordpress Wordpress wordpress |
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| Vendors & Products |
Cmb2
Cmb2 cmb2 Wordpress Wordpress wordpress |
Thu, 24 Sep 2026 07:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-284 |
Thu, 24 Sep 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The CMB2 WordPress plugin before 2.13.0 does not perform any capability check on one of its AJAX actions, allowing users with a role as low as Subscriber to create arbitrary WordPress options and corrupt existing ones, which can break core site settings and take the site offline. Exploitation requires the site's or another CMB2 WordPress plugin before 2.13.0 to have declared an oEmbed field, as the CMB2 WordPress plugin before 2.13.0 registers none of its own. The stored value is never attacker-controlled, so the issue does not lead to privilege escalation. | |
| Title | CMB2 < 2.13.0 - Subscriber+ Arbitrary Option Corruption via oEmbed Handler | |
| References |
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Projects
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Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2026-09-24T10:41:56.075Z
Reserved: 2026-08-26T09:02:21.818Z
Link: CVE-2026-80338
No data.
Status : Received
Published: 2026-09-24T06:17:01.317
Modified: 2026-09-24T06:17:01.317
Link: CVE-2026-80338
No data.
OpenCVE Enrichment
Updated: 2026-09-24T10:00:13Z
Weaknesses