CVE-2026-42597: medium-severity vulnerability in gotenberg
Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// scheme
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.3%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
gotenberg · gotenbergRelated CVEs — gotenberg
In the same product, most dangerous first.
CVE-2026-42589CRITICALGotenberg: Unauthenticated RCE via ExifTool Metadata Key InjectionEPSS 3.0%CVE-2026-40281CRITICALGotenberg vulnerable to argument injection via newlines in ExifTool metadata valuesEPSS 2.3%CVE-2026-40280HIGHGotenberg SSRF via case-insensitive URL scheme bypass in webhook and downloadFrom deny-listsEPSS 1.9%CVE-2026-27018HIGHGotenberg: Chromium deny-list bypass via case-insensitive URL schemeEPSS 1.7%CVE-2026-42596CRITICALGotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhookEPSS 1.6%CVE-2026-55229HIGHGotenberg: SSRF via LibreOffice document processingEPSS 1.5%