How severe is CVE-2026-25642?

CVE-2026-25642 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-25642 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25642?

CVE-2026-25642 affects Hedgedoc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25642?

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

Does CVE-2026-25642 have an EU (EUVD) identifier?

Yes. CVE-2026-25642 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5588.

When was CVE-2026-25642 published?

CVE-2026-25642 was published on 2026-02-06 and last updated on 2026-06-17.

CVE-2026-25642

CVE-2026-25642 is a medium-severity vulnerability in Hedgedoc with a CVSS 3.x base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5588
Weakness: CWE-79
Affected product: Hedgedoc
Published: 2026-02-06
Last modified: 2026-06-17

Description

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.6, files served below the /uploads/ endpoint did not use a more strict security-policy. This resulted in a too open Content-Security-Policy and furthermore opened the possibility to host malicious interactive web content (such as fake login forms) using SVG files. This vulnerability is fixed in 1.10.6.

Frequently asked questions

What is CVE-2026-25642?: HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.6, files served below the /uploads/ endpoint did not use a more strict security-policy. This resulted in a too open Content-Security-Policy and furthermore opened the possibility to host malicious interactive web content (such as fake login forms) using SVG files. This vulnerability is fixed in 1.10.6.
How severe is CVE-2026-25642?: CVE-2026-25642 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-25642 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25642?: CVE-2026-25642 affects Hedgedoc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25642?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25642 have an EU (EUVD) identifier?: Yes. CVE-2026-25642 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5588.
When was CVE-2026-25642 published?: CVE-2026-25642 was published on 2026-02-06 and last updated on 2026-06-17.

References

Affected products (1)

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

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