Description SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files. Remediation References CVE-2021-27890 Related Vulnerabilities WordPress Plugin Backup, Restore and Migrate WordPress Sites With the XCloner Cross-Site Scripting (3.1.2) WordPress Other Vulnerability (CVE-2006-3389) Roundcube Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2012-3507) Nginx Other Vulnerability (CVE-2016-0746) XWiki Missing Authorization Vulnerability (CVE-2022-36091) Severity High Classification CVE-2021-27890 CWE-138 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Tags Missing Update Known Vulnerabilities