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CVE-2026-42597— Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// scheme

CVSS 5.9 · Medium
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I. Basic Information for CVE-2026-42597

Vulnerability Information
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Vulnerability Title
Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// scheme
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
文件名或路径的外部可控制
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
gotenberggotenberg < 8.32.0 -

II. Public POCs for CVE-2026-42597

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III. Intelligence Information for CVE-2026-42597

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Same Patch Batch · gotenberg · 2026-05-14 · 10 CVEs total

CVE-2026-425899.8 CRITICALGotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection
CVE-2026-425969.4 CRITICALGotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook
CVE-2026-425958.6 HIGHGotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-
CVE-2026-425918.2 HIGHGotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8
CVE-2026-425908.2 HIGHGotenberg: ExifTool group-prefix syntax bypasses dangerous-tag blocklist
CVE-2026-408938.2 HIGHGotenberg: ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names Allows Arb
CVE-2026-425947.5 HIGHGotenberg: Unauthenticated denial of service via echo.Context pool reuse in webhook async
CVE-2026-425935.3 MEDIUMGotenberg: Arbitrary PDF read via stampExpression and watermarkExpression in merge, split,
CVE-2026-425925.3 MEDIUMGotenberg: DNS rebinding bypasses SSRF validation on Chromium URL conversion routes

IV. Related Vulnerabilities

Same product: gotenberg
Same vendor: gotenberg
Same weakness: CWE-73

V. Comments for CVE-2026-42597

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