CVE-2026-42597
Description
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the /forms/chromium/convert/url and /forms/chromium/screenshot/url routes accept url=file:///tmp/... from anonymous callers. The default Chromium deny-list intentionally exempts file:///tmp/ so HTML/Markdown routes can load their own request-local assets, and those routes apply a per-request AllowedFilePrefixes guard to scope the read. The URL routes never set AllowedFilePrefixes, so the scope guard silently skips. Alice enumerates /tmp/, walks Gotenberg's per-request working directories, and reads the raw source files of other in-flight conversions as rendered PDF output. This vulnerability is fixed in 8.32.0.
How to fix
- thecodingmachine gotenberg8.32.0 or later
- github.com/gotenberg/gotenberg/v88.32.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| thecodingmachine gotenberg | v < 8.32.0 | 8.32.0 |
| github.com/gotenberg/gotenberg/v8Go | v < 8.32.0 | 8.32.0 |
| github.com/gotenberg/gotenberg/v7Go | v ≤ 7.10.2, No range specified | — |
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