How severe is CVE-2025-66629?

CVE-2025-66629 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-66629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66629?

CVE-2025-66629 affects Hedgedoc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66629?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66629 have an EU (EUVD) identifier?

Yes. CVE-2025-66629 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201504.

When was CVE-2025-66629 published?

CVE-2025-66629 was published on 2025-12-05 and last updated on 2026-06-17.

CVE-2025-66629

CVE-2025-66629 is a low-severity vulnerability in Hedgedoc with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201504
Weakness: CWE-352
Affected product: Hedgedoc
Published: 2025-12-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-66629?: 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.
How severe is CVE-2025-66629?: CVE-2025-66629 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-66629 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66629?: CVE-2025-66629 affects Hedgedoc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66629?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66629 have an EU (EUVD) identifier?: Yes. CVE-2025-66629 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201504.
When was CVE-2025-66629 published?: CVE-2025-66629 was published on 2025-12-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hedgedoc:hedgedoc:*:*:*:*:*:*:*:*

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