CVE-2026-25642: Hedgedoc

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.6, files served below the /uploads/ endpoint did not use a more strict security-policy. This resulted in a too open Content-Security-Policy and furthermore opened the possibility to host malicious interactive web content (such as fake login forms) using SVG files. This vulnerability is fixed in 1.10.6.

Affected products

• Hedgedoc Hedgedoc: before 1.10.6 (fixed in 1.10.6)

Published 2026-02-06. Last modified 2026-06-17.