CVE-2025-66629: Hedgedoc

Medium severity, CVSS 4.3. EPSS: 0.1% chance of exploitation in the next 30 days.

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.4, some of HedgeDoc's OAuth2 endpoints for social login providers such as Google, GitHub, GitLab, Facebook or Dropbox lack CSRF protection, since they don't send a state parameter and verify the response using this parameter. This vulnerability is fixed in 1.10.4.

Affected products

• Hedgedoc Hedgedoc: before 1.10.4 (fixed in 1.10.4)

Published 2025-12-05. Last modified 2026-06-17.