VULNERABILITY INTELLIGENCE

CVE-2023-53976

CVSS score5.4 MEDIUM
EPSS probability0.24%
CISA KEVNot currently listed
Published2025-12-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

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

Weakness classification

  • disclosure@vulncheck.com: CWE-79

Primary references