Gotenberg · Gotenberg · CVE-2026-42595
**Name of the Vulnerable Software and Affected Versions**
Gotenberg versions prior to 8.32.0
**Description**
Gotenberg is a Docker-powered stateless API for PDF files. The Chromium URL-to-PDF endpoint '/forms/chromium/convert/url' lacks default protection against Server-Side Request Forgery (SSRF) for HTTP and HTTPS requests, as the default deny-list only blocks `file://` URIs. This allows an unauthenticated attacker to direct Chromium to internal IP addresses, including loopback, RFC 1918 ranges, and cloud metadata endpoints, receiving the response rendered as a PDF. Additionally, the `downloadFrom` and `webhook` endpoints are also affected by a redirect-based bypass. Even when a custom deny-list is configured, the Chromium instance and other endpoints follow HTTP 302 redirects from attacker-controlled external URLs to internal targets without re-validating the destination against the deny-list.
**Recommendations**
Update to version 8.32.0.
As a temporary workaround, restrict access to the '/forms/chromium/convert/url' endpoint to minimize the risk of exploitation.