Description Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools. Remediation References CVE-2021-27949 Related Vulnerabilities PostgreSQL Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') Vulnerability (CVE-2020-21469) WordPress Plugin WooSidebars Cross-Site Scripting (1.4.1) WordPress Plugin Live Chat Unlimited Cross-Site Scripting (2.8.3) MySQL CVE-2014-4240 Vulnerability (CVE-2014-4240) WordPress Plugin Anti-Malware Security and Brute-Force Firewall Multiple Cross-Site Scripting Vulnerabilities (4.15.17) Severity Medium Classification CVE-2021-27949 CWE-707 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Tags Missing Update Known Vulnerabilities