Vulnerability Database

321,491

Total vulnerabilities in the database

CVE-2023-53979

MyBB 1.8.32 contains a chained vulnerability that allows authenticated administrators to bypass avatar upload restrictions and execute arbitrary code. Attackers can modify upload path settings, upload a malicious PHP-embedded image file, and execute commands through the language configuration editing interface.

  • Published: Dec 22, 2025
  • Updated: Dec 27, 2025
  • CVE: CVE-2023-53979
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.8
  • AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWEs:

OWASP TOP 10:

Software From Fixed in
mybb / mybb 1.8.32 1.8.32.x