Medium CVSS 4.3

Overview

Cross-site scripting (XSS) vulnerability in MyBulletinBoard (MyBB) allows remote attackers to inject arbitrary web script or HTML via a signature containing a JavaScript URI in the SRC attribute of an IMG element, in which the URI uses SGML numeric character references without trailing semicolons, as demonstrated by "&#106&#97&#118&#97&#115&#99&#114&#105&#112&#116".

Risk analysis

This vulnerability is rated 🟡 MEDIUM.

  • CVSS: 4.3 (MEDIUM)
  • Detected tags: none (tag impact: LOW)

Recommended actions:

  • Prioritize remediation based on business criticality and exposure.
  • Limit exposure and increase monitoring until fixed.

Recommended tools

Tags