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CVE-2024-45308: HedgeDoc is an open source, real-time, collaborative, markdown notes application

44
This week
MEDIUM 6.5REMOTEUPGRADE

CVE-2024-45308 is a medium-severity flaw (CVSS 6.5) 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. When using HedgeDoc 1 with MySQL or MariaDB, it is possible to create notes with an alias matching the ID of existing notes. The affected existing note can then not be accessed anymore and is effectively hidden by the new one. When the freeURL feature is enabled (by setting the `allowFreeURL` config option or the `CMD_ALLOW_FREEURL` environment variable to `true`),

Why this priority

  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance0.6% (top 54%)
CISA exploited listNo
WeaknessCWE-1289
Published2024-09-02
Last modified2026-06-17
Publisher (CNA): GitHub, Inc. · Vendor: hedgedoc

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

Am I affected?

Timeline

hedgedoc hedgedoc UPGRADE
Affected: < 1.10.0
Fixed in: 1.10.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy hedgedoc || rpm -q hedgedoc || hedgedoc --version
2. UPGRADE to 1.10.0 (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-2024-45308?

hedgedoc: upgrade to 1.10.0. Exact commands for each OS are on this page.

Is CVE-2024-45308 being exploited?

CVE-2024-45308 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-2024-45308 affect?

CVE-2024-45308 affects hedgedoc. Severity is medium (CVSS 6.5). HedgeDoc is an open source, real-time, collaborative, markdown notes application. When using HedgeDoc 1 with MySQL or MariaDB, it is possible to create notes with an alias matching the ID of existing notes. The affected existing note can th

How urgent is CVE-2024-45308?

Priority 44/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

MySQL vulnerabilities · MariaDB vulnerabilities

Related CVEs

References

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