Description
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.
Problem types
CWE-918: Server-Side Request Forgery (SSRF)
Product status
References
github.com/...enberg/security/advisories/GHSA-4vmc-gm8v-m35h
github.com/...enberg/security/advisories/GHSA-4vmc-gm8v-m35h