Executive Summary

Informations
Name CVE-2021-43281 First vendor Publication 2021-11-04
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.2
Base Score 7.2 Environmental Score 7.2
impact SubScore 5.9 Temporal Score 7.2
Exploitabality Sub Score 1.2
 
Attack Vector Network Attack Complexity Low
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:P/I:P/A:P)
Cvss Base Score 6.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43281

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-94 Failure to Control Generation of Code ('Code Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 92

Sources (Detail)

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

Alert History

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Date Informations
2025-07-01 01:50:11
  • Multiple Updates
2024-11-28 14:02:17
  • Multiple Updates
2021-11-05 21:22:55
  • Multiple Updates
2021-11-04 21:22:53
  • First insertion