CVE-2021-43281 Information

Description

MyBB before 1.8.29 allows Remote Code Injection by an admin with the \Can manage settings?\ permission. The Admin CP’s Settings management module does not validate setting types correctly on insertion and update making it possible to add settings of supported type \php\ with PHP code executed on Change Settings pages.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.2