CVE-2021-43281

High

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.

SeverityHigh
CVSS7.2
Exploit probability—
ProductMybb
PublishedNov 4, 2021
First seenNov 4, 2021

How to fix

Update
  • mybb mybb1.8.29 or later

Affected products

ProductAffected versionsFixed in
mybb mybb1.2.0 ≤ v < 1.8.291.8.29

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