Vulnerability identifier: #VU51539

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-27890

CWE-ID: CWE-89

Exploitation vector: Network

Exploits in database: 3

• April 7, 2022
  • Mybb-XSS_SQL_RCE-POC (Mybb associate CVE-2021-27890 & CVE-2021-27889 to RCE poc) [Github]
• June 17, 2021
  • MyBB 1.8.25 - Chained Remote Command Execution [Exploit-DB]
• March 24, 2021
  • MyBB 1.8.25 Remote Command Execution [Packet Storm]

Impact: Code execution

Vulnerable software:
MyBB
Other software / Other software solutions

Vendor: MyBB Group