CVE-2026-40893: Thecodingmachine Gotenberg

High severity, CVSS 8.2. EPSS: 0.5% chance of exploitation in the next 30 days.

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg only checks if the tag is exactly FileName, so System:FileName slips right through and ExifTool happily renames the file. This allows remote attackers to move, rename, and change permissions for arbitrary files. This vulnerability is fixed in 8.31.0.

Affected products

• Thecodingmachine Gotenberg: before 8.31.0 (fixed in 8.31.0)

Published 2026-05-14. Last modified 2026-06-17.