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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (13.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Mybb Delete Account — versions 1.4
- Vintagedaddyo Mybb Delete Account Plugin — versions 1.4
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49500 (Exploit, VDB Entry, exploit)
- github.com/vintagedaddyo/MyBB_Plugin-Delete_Account/ (Product, product)
- www.vulncheck.com/advisories/mybb-delete-account-plugin-cross-site-scripting (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.