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CVE-2024-32983: Misskey is an open source, decentralized microblogging platform

47
This week
HIGH 8.2REMOTEUPGRADE

CVE-2024-32983 is a high-severity flaw (CVSS 8.2) affecting misskey. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score8.2 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.4% (top 66%)
CISA exploited listNo
WeaknessCWE-863
Published2024-06-03
Last modified2026-06-17
Publisher (CNA): GitHub, Inc. · Vendor: misskey

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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

misskey misskey UPGRADE
Affected: < 2024.5.0
Fixed in: 2024.5.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy misskey || rpm -q misskey || misskey --version
2. UPGRADE to 2024.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade misskey
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade misskey
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-2024-32983?

misskey: upgrade to 2024.5.0. Exact commands for each OS are on this page.

Is CVE-2024-32983 being exploited?

CVE-2024-32983 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-2024-32983 affect?

CVE-2024-32983 affects misskey. Severity is high (CVSS 8.2). Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the

How urgent is CVE-2024-32983?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

References

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