CVE-2026-80338
CMB2 < 2.13.0 - Subscriber+ Arbitrary Option Corruption via oEmbed Handler
- State
- Published
- Severity
- 6.8 Medium
- Published
- Sep 24, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
CMB2Unknown |
|
References
- https://wpscan.com/vulnerability/7402e0b0-54de-42b3-9032-ae225fb4e76a/exploitvdb-entrytechnical-description
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.