XSS in Mybb Delete Account
CVE-2021-47905
MyBB Delete Account Plugin 1.4 contains a cross-site scripting vulnerability in the account deletion reason input field. Attackers can inject malicious scripts that will execute in the admin interface when viewing delete account reasons.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (11.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Mybb Delete_account — versions 1.4
- Vintagedaddyo Mybb Delete Account Plugin — versions 1.4
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-2021-47905?
- CVE-2021-47905 is a medium-severity vulnerability in Mybb Delete Account, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-01-23.
- How severe is CVE-2021-47905?
- Medium severity. CVSS v3 base score is 6.1 out of 10.