Description MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode). Remediation References CVE-2021-27279 Related Vulnerabilities WordPress Plugin Facebook Like Box Cross-Site Request Forgery (2.8.2) Drupal Core 4.5.x Cross-Site Scripting (4.5.0 - 4.5.7) Nexus Repository Manager Server-Side Request Forgery (SSRF) Vulnerability (CVE-2022-27907) WebLogic CVE-2022-21260 Vulnerability (CVE-2022-21260) WordPress Plugin Clik stats Open Redirect (0.8) Severity Medium Classification CVE-2021-27279 CWE-707 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Tags Missing Update Known Vulnerabilities