CVE-2025-32391: HedgeDoc is an open source, real-time, collaborative, markdown notes application

Q: How do I fix CVE-2025-32391?

hedgedoc: upgrade to 1.10.3. Exact commands for each OS are on this page.

Q: Is CVE-2025-32391 being exploited?

CVE-2025-32391 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-32391 affect?

CVE-2025-32391 affects hedgedoc. Severity is medium (CVSS 6.4). HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is

Q: How urgent is CVE-2025-32391?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADE

CVE-2025-32391 is a medium-severity flaw (CVSS 6.4) affecting hedgedoc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub Gist embeddings. Only instances with the local filesystem upload backend or special configurations, where the uploads are served from the same domain as

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-04-10
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: hedgedoc

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-10 14:15 UTCPublished CVE record published
2026-06-17 09:11 UTCUpdated Record last modified

hedgedoc hedgedoc UPGRADE

Affected: < 1.10.3

Fixed in: 1.10.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hedgedoc || rpm -q hedgedoc || hedgedoc --version

2. UPGRADE to 1.10.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hedgedoc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hedgedoc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-32391?

hedgedoc: upgrade to 1.10.3. Exact commands for each OS are on this page.

Is CVE-2025-32391 being exploited?

CVE-2025-32391 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-32391 affect?

CVE-2025-32391 affects hedgedoc. Severity is medium (CVSS 6.4). HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is

How urgent is CVE-2025-32391?

Priority 29/100. No elevated risk signals yet.

Software pages

GitHub vulnerabilities

Related CVEs

CVE-2025-66629 LOW 3.7 UPGRADE HedgeDoc is an open source, real-time, collaborative, markdown notes application
CVE-2026-25642 MEDIUM 4.3 UPGRADE HedgeDoc is an open source, real-time, collaborative, markdown notes application
CVE-2024-45308 MEDIUM 6.5 UPGRADE HedgeDoc is an open source, real-time, collaborative, markdown notes application

References

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