Vulnerability Description
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, Gotenberg's Chromium URL-to-PDF endpoint (/forms/chromium/convert/url) has no default protection against HTTP/HTTPS-based SSRF. The default deny-list regex only blocks file:// URIs. An unauthenticated attacker can point Chromium at any internal IP — including loopback, RFC 1918 ranges, and cloud metadata endpoints — and receive the response rendered as a PDF. Additionally, even when operators configure a custom deny-list, the protection is bypassed via HTTP redirects. Gotenberg's Chromium instance follows 302 redirects from an attacker-controlled external URL to internal targets without re-validating the redirect destination against the deny-list. This vulnerability is fixed in 8.32.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Thecodingmachine | Gotenberg | < 8.32.0 |
Related Weaknesses (CWE)
References
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-chwh-f6gm-r836ExploitVendor Advisory
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-chwh-f6gm-r836ExploitVendor Advisory
FAQ
What is CVE-2026-42595?
CVE-2026-42595 is a vulnerability with a CVSS score of 8.6 (HIGH). Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, Gotenberg's Chromium URL-to-PDF endpoint (/forms/chromium/convert/url) has no default protection against HTTP/HTTPS-based SS...
How severe is CVE-2026-42595?
CVE-2026-42595 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42595?
Check the references section above for vendor advisories and patch information. Affected products include: Thecodingmachine Gotenberg.