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CVE-2026-42591— Gotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8

Quick assessment

Affected
gotenberg gotenberg
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Gotenberg是Gotenberg开源的一个开发人员友好的 API。用于将多种文档格式转换为 PDF 文件。 Gotenberg 8.32.0之前版本存在代码问题漏洞，该漏洞源于LibreOffice转换端点未检查上传文档内容，允许LibreOffice获取嵌入的外部URL，绕过SSRF过滤器。

CVSS 8.2 · High EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
gotenberg gotenberg < 8.32.0 affected
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I. Basic Information for CVE-2026-42591

Vulnerability Information
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Vulnerability Title
Gotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8
Source: CVE Program / CVE List V5
Vulnerability Description
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely bypassing the SSRF filters. This vulnerability is fixed in 8.32.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Gotenberg 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gotenberg是Gotenberg开源的一个开发人员友好的 API。用于将多种文档格式转换为 PDF 文件。 Gotenberg 8.32.0之前版本存在代码问题漏洞，该漏洞源于LibreOffice转换端点未检查上传文档内容，允许LibreOffice获取嵌入的外部URL，绕过SSRF过滤器。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gotenberg gotenberg < 8.32.0 -

II. Public POCs for CVE-2026-42591

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III. Intelligence Information for CVE-2026-42591

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Vendor Advisories for CVE-2026-42591 (1)

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

CVE-2026-42589 9.8 CRITICAL Gotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection
CVE-2026-42596 9.4 CRITICAL Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook
CVE-2026-42595 8.6 HIGH Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-
CVE-2026-42590 8.2 HIGH Gotenberg: ExifTool group-prefix syntax bypasses dangerous-tag blocklist
CVE-2026-40893 8.2 HIGH Gotenberg: ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names Allows Arb
CVE-2026-42594 7.5 HIGH Gotenberg: Unauthenticated denial of service via echo.Context pool reuse in webhook async
CVE-2026-42597 5.9 MEDIUM Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// sche
CVE-2026-42593 5.3 MEDIUM Gotenberg: Arbitrary PDF read via stampExpression and watermarkExpression in merge, split,
CVE-2026-42592 5.3 MEDIUM Gotenberg: 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-2026-42591

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