Gotenberg: SSRF via LibreOffice document processing

Description

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.

Scores

EPSS (exploitation in 30 days)

1.5% · top 25% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• CWE-918: Server-Side Request Forgery (SSRF) (opens in a new tab)All about CWE-918 and its CVEs

Affected products

• gotenberg · gotenberg

  • affected < 8.34.0

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Gogithub.com/gotenberg/gotenberg/v8GHSA-2mrg-35hw-x3x9 (opens in a new tab)

References (3)

• https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2mrg-35hw-x3x9 (opens in a new tab)x_refsource_CONFIRMexploit
• https://github.com/gotenberg/gotenberg/commit/98fc40347885ad510a311b990a73397c6d4143db (opens in a new tab)x_refsource_MISC
• https://github.com/gotenberg/gotenberg/releases/tag/v8.34.0 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-2mrg-35hw-x3x9 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-55229](https://trackcve.app/badge/CVE-2026-55229.svg)](https://trackcve.app/cve/CVE-2026-55229)

Record last updated 13 Jul 2026, 16:19 UTC.