CVE-2025-55151: Stirlingpdf Stirling PDF

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. Prior to version 1.1.0, the "convert file to pdf" functionality (/api/v1/convert/file/pdf) uses LibreOffice's unoconvert tool for conversion, and SSRF vulnerabilities exist during the conversion process. This issue has been patched in version 1.1.0.

Affected products

• Stirlingpdf Stirling PDF: before 1.1.0 (fixed in 1.1.0)

Published 2025-08-11. Last modified 2026-06-17.