Description Cross-site Scripting (XSS) vulnerability in MyBB before 1.8.26 via Nested Auto URL when parsing messages. Remediation References CVE-2021-27889 Related Vulnerabilities IBM WebSEAL Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2019-4725) e107 Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2010-5084) WordPress Plugin Product Slider for WooCommerce Security Bypass (2.5.6) Ruby Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability (CVE-2017-14033) WordPress Plugin Quick Featured Images Cross-Site Scripting (12.3.5) Severity Medium Classification CVE-2021-27889 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