YesWiki Vulnerable to Reflected XSS via Unescaped Archived-Revision `time` Parameter in `handlers/page/show.php`

Summary YesWiki's archived-revision view reflects the time GET parameter into a hidden HTML input in handlers/page/show.php without escaping. Because MySQL coerces malformed DATETIME strings, an attacker can append HTML or JavaScript to a valid archived revision timestamp, still load that archive...