Description
Cross-site scripting (XSS) vulnerability in the redirect function in functions.php in MyBB (aka MyBulletinBoard) 1.4.2 allows remote attackers to inject arbitrary web script or HTML via the url parameter in a removesubscriptions action to moderation.php, related to use of the ajax option to request a JavaScript redirect. NOTE: this can be leveraged to execute PHP code and bypass cross-site request forgery (CSRF) protection.
Remediation
References
Related Vulnerabilities
WordPress Plugin TablePress XML External Entity Injection (1.8)
WordPress Server-Side Request Forgery (SSRF) Vulnerability (CVE-2019-17669)
Envoy Proxy Improper Check for Unusual or Exceptional Conditions Vulnerability (CVE-2021-32780)
Jboss EAP Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-9788)