Gotenberg < 8.31.0 - Server-Side Request Forgery

Gotenberg before 8.31.0 is vulnerable to server-side request forgery SSRF due to insufficient validation of URLs in the downloadFrom API. An unauthenticated attacker can exploit the flaw by providing specially crafted IPv4-mapped IPv6 addresses such as http://::ffff:127.0.0.1 that bypass the...