Vulnerability Database

321,491

Total vulnerabilities in the database

CVE-2023-53977

myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the forum management system that allows authenticated administrators to inject malicious scripts when creating new forums. Attackers can exploit this vulnerability by inserting script payloads in the forum title field when adding new forums through the 'Forums and Posts' > 'Forum Management' interface, causing arbitrary JavaScript to execute when the forum listing is viewed.

  • Published: Dec 22, 2025
  • Updated: Dec 27, 2025
  • CVE: CVE-2023-53977
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.4
  • AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CWEs:

OWASP TOP 10:

Software From Fixed in
mybb / mybb 1.8.26 1.8.26.x