Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Gotenberg versions up to and including 8.31.0 are affected. The LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents to LibreOffice without inspecting embedded external references, so LibreOffice fetches those URLs itself and bypasses Gotenberg's SSRF protections. An attacker who can submit a crafted document can make the server reach internal services and cloud metadata endpoints, and the response data can be returned in the generated PDF. No fixed version is listed.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.2 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0025, the 17th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 14 May 2026, 16:16 UTC Confirmed by NVD
- 31 Oct 2026, 15:06 UTC First seen by agentprime
- 31 Oct 2026, 15:06 UTC Confirmed by OSV