CVE-2026-27018: Thecodingmachine Gotenberg

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

Gotenberg is an API for converting document formats. Prior to version 8.29.0, the fix introduced for CVE-2024-21527 can be bypassed using mixed-case or uppercase URL schemes. This issue has been patched in version 8.29.0.

Affected products

• Thecodingmachine Gotenberg: before 8.29.0 (fixed in 8.29.0)

Published 2026-03-30. Last modified 2026-06-17.