#VU51539 SQL injection in MyBB - CVE-2021-27890
Published: March 17, 2021 / Updated: April 7, 2022
Vulnerability identifier: #VU51539
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2021-27890
CWE-ID: CWE-89
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
MyBB
MyBB
Software vendor:
MyBB Group
MyBB Group
Description
The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data within the theme properties included in theme XML files. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..