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 User Access Manager Cross-Site Scripting (1.2.6.7) OpenSSL Other Vulnerability (CVE-2000-0535) Oracle HTTP Server Improper Restriction of XML External Entity Reference Vulnerability (CVE-2018-20843) Joomla! Core 3.x.x SQL Injection (3.0.0 - 3.4.6) MySQL CVE-2016-0667 Vulnerability (CVE-2016-0667) 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