Description
WordPress Core is vulnerable to Directory Traversal in versions up to, and including, 6.2, via the ‘wp_lang’ parameter. This allows unauthenticated attackers to access and load arbitrary translation files. In cases where an attacker is able to upload a crafted translation file onto the site, such as via an upload form, this could be also used to perform a Cross-Site Scripting attack.
Remediation
References
Related Vulnerabilities
WordPress Plugin Calendar by WD-Responsive Event Calendar for WordPress SQL Injection (1.5.51)
Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2012-3388)
WordPress URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2019-16220)