XSS in Mybb My Arcade
CVE-2018-25249
MyBB My Arcade Plugin 1.3 contains a persistent cross-site scripting vulnerability that allows authenticated users to inject malicious scripts through arcade game score comments. Attackers can add crafted HTML and JavaScript payloads in the comment field that execute when other users view or edit the comment.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (17.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Mybb My_arcade — versions 1.3
- Mybb My Arcade Plugin — versions 1.3
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, VDB Entry, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2018-25249?
- CVE-2018-25249 is a medium-severity vulnerability in Mybb My Arcade, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-04-04.
- How severe is CVE-2018-25249?
- Medium severity. CVSS v3 base score is 6.4 out of 10.