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OpenAdvisories
Low · 3.7 CVE-2025-66629 EUVD-2025-201504

HedgeDoc is missing state parameter in OAuth2 flows could lead to CSRF

Published Dec 5, 2025 · Updated Dec 8, 2025 · Assigned by GitHub_M

Description

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

VendorProductAffectedFixed
hedgedoc hedgedoc < 1.10.4 —

References