Threats tagged 'ghsa-35f3-pg38-486f'

YesWiki versions from 4.1.0 up to but not including 4.6.6 are vulnerable to a reflected cross-site scripting (XSS) issue via the unescaped 'time' GET parameter in the archived revision view handler (handlers/page/show.php). The vulnerability occurs because the 'time' parameter is reflected into a hidden HTML input field without proper escaping, allowing an attacker to inject arbitrary JavaScript. Exploitation requires the victim to have both read and write access to the target page, although some default configurations may allow anonymous exploitation on public editable pages. The issue arises due to MySQL's coercion of malformed DATETIME strings, enabling the crafted payload to match an archived revision and be reflected unescaped in the response.