CVE-2026-42597
Last modified
CVE-2026-42597 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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/... EPSS estimates a 0.25% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Thecodingmachine | Gotenberg | < 8.32.0 |
References
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-g924-cjx7-2rjwExploit, Mitigation, Vendor Advisory
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-g924-cjx7-2rjwExploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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