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CVE-2026-42595— Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass

CVSS 8.6 · High EPSS 0.06% · P18
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I. Basic Information for CVE-2026-42595

Vulnerability Information
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Vulnerability Title
Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
gotenberggotenberg < 8.32.0 -

II. Public POCs for CVE-2026-42595

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III. Intelligence Information for CVE-2026-42595

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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-2026-425918.2 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-2026-425975.9 MEDIUMGotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// sche
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-918

V. Comments for CVE-2026-42595

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