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CVE-2025-66629

16
FAUCET Score

CVE-2025-66629 is a Cross-Site Request Forgery (CSRF) vulnerability affecting HedgeDoc, an open-source collaborative markdown notes application, in versions prior to 1.10.4. Specifically, its OAuth2 endpoints for social login providers like Google, GitHub, and Facebook lack proper CSRF protection due to the absence of a state parameter verification. This vulnerability has a CVSS score of 4.3 (MEDIUM), indicating a network-based attack with low complexity, requiring user interaction, and potentially leading to a low impact on integrity. While it doesn't directly compromise confidentiality or availability, it could allow an attacker to perform actions on behalf of a logged-in user. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting it has not garnered significant attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.4CPE matchmatch criteria
cpe:2.3:a:hedgedoc:hedgedoc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.09%
Probability of exploitation in next 30 days
EPSS Percentile
0.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0009 is in the 0th percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / hedgedoc/hedgedoc/commit/35f36fccba941ed8029ee222f7d2a5df17b42e2b
Patch
github.com / hedgedoc/hedgedoc/security/advisories/GHSA-6wm6-3vpq-6qvv
PatchVendor Advisory