CVE-2021-43281: Code Injection
First published: Thu Nov 04 2021(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mybb Mybb | >=1.2.0<1.8.29 | |
| >=1.2.0<1.8.29 |
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Frequently Asked Questions
What is CVE-2021-43281?
CVE-2021-43281 is a vulnerability identified in MyBB before version 1.8.29 which allows Remote Code Injection by an admin with the "Can manage settings?" permission.
What is the severity of CVE-2021-43281?
The severity of CVE-2021-43281 is rated as high with a severity value of 7.2.
How does CVE-2021-43281 affect MyBB?
CVE-2021-43281 allows an admin with the "Can manage settings?" permission to inject remote code into MyBB before version 1.8.29, potentially leading to security breaches.
How can I fix CVE-2021-43281?
To fix CVE-2021-43281, it is recommended to update MyBB to version 1.8.29 or higher, which has addressed this vulnerability.
Where can I find more information about CVE-2021-43281?
You can find more information about CVE-2021-43281 on the GitHub Security Advisory page at https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p.
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