CVE-2021-27946: Mybb

High severity, CVSS 8.8. EPSS: 4.2% chance of exploitation in the next 30 days.

SQL Injection vulnerability in MyBB before 1.8.26 via poll vote count. (issue 1 of 3).

Affected products

• Mybb Mybb: before 1.8.26 (fixed in 1.8.26)

Published 2021-03-15. Last modified 2026-06-17.