TI-2026-39906 Aliases CVE-2026-55229 GHSA-2mrg-35hw-x3x9

Gotenberg: SSRF via LibreOffice document processing

HIGH 72CWE-918Published 2026-07-10 · Updated 2026-07-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

Summary

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.34.0, Gotenberg's /forms/libreoffice/convert endpoint allows a specially crafted document to cause LibreOffice to automatically retrieve external HTTP(S) resources and local file resources during document conversion, enabling blind SSRF and limited local file disclosure via linked image resource loading. This issue is fixed in version 8.34.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01514 74th percentileScored 2026-11-07

Fix Fixed gotenberg (gotenberg): 8.34.0github.com/gotenberg/gotenberg/v8 (Go): 8.34.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
gotenberg	gotenberg	before 8.34.0	8.34.0	Patch available	CNA
—	github.com/gotenberg/gotenberg/v8 (Go)	before 8.34.0	8.34.0	Patch available	GHSA-2mrg-35hw-x3x9

gotenberg Vendorgotenberg Affected before 8.34.0 Fixed in 8.34.0 Patch available CNA
github.com/gotenberg/gotenberg/v8 (Go) Vendor— Affected before 8.34.0 Fixed in 8.34.0 Patch available GHSA-2mrg-35hw-x3x9

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:thecodingmachine:gotenberg::::::::	—	—	gotenberg

cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:* Versions — — ·gotenberg

Remediation

Fix · CNA gotenberg (gotenberg) Fixed in 8.34.0
Fix · GHSA-2mrg-35hw-x3x9 github.com/gotenberg/gotenberg/v8 (Go) Fixed in 8.34.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-55229
2026-10-03 Alias added: GHSA-2mrg-35hw-x3x9

References

Other 4

TI-2026-30869 Gotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection CVSS 3.1CRITICAL 9.8
TI-2026-29063 Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values CVSS 3.1CRITICAL 10.0
TI-2026-30876 Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook CVSS 3.1CRITICAL 9.4
TI-2026-27588 Gotenberg has a ReDoS via extraHttpHeaders scope feature CVSS 4.0HIGH 8.7
TI-2026-30875 Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass CVSS 3.1HIGH 8.6
TI-2026-30871 Gotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8 CVSS 3.1HIGH 8.2

See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences