Andrew Burian

**Name of the Vulnerable Software and Affected Versions** PowerMux versions prior to 1.1.1 **Description** PowerMux is a drop-in replacement for Go's http.ServeMux. Attackers may be able to craft phishing links and other open redirects by exploiting the trailing slash redirection feature. This may lead to users being redirected to untrusted sites after following an attacker crafted link. You may detect attempts to craft URLs that exploit this feature by looking for request paths containing pairs of forward slashes in sequence combined with a trailing slash, e.g., `https://example.com//foo/`. **Recommendations** For versions prior to 1.1.1, update to version 1.1.1 to resolve the issue. As a temporary workaround, consider monitoring request paths for pairs of forward slashes in sequence combined with a trailing slash to detect potential exploitation attempts.