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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-66629
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-05 23:15:47 UTC
Updated2026-10-15 21:10:00 UTC
DescriptionHedgeDoc 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS: 0.001000000 probability, percentile 0.008330000 (date 2026-10-15)

Problem Types: CWE-352 | CWE-352 CWE-352: Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
3.1[email protected]Secondary3.7LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
3.1CNADECLARED3.7LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Hedgedoc Hedgedoc All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Hedgedoc Hedgedoc affected < 1.10.4 Not specified

References

ReferenceSourceLinkTags
github.com/hedgedoc/hedgedoc/commit/35f36fccba941ed8029ee222f7d2a5df17b4... [email protected] github.com Patch
github.com/hedgedoc/hedgedoc/security/advisories/GHSA-6wm6-3vpq-6qvv [email protected] github.com Patch, Vendor Advisory
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