SSRF in Gotenberg
CVE-2026-55229
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.005 (38.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Gotenberg — versions < 8.34.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-55229?
- CVE-2026-55229 is a high-severity vulnerability in Gotenberg, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-07-10.
- How severe is CVE-2026-55229?
- High severity. CVSS v3 base score is 7.5 out of 10.