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CVE-2024-52591

Misskey vulnerability

9.3 CRITICALEPSS 0.32%
  1. Published18 Dec 2024

Description

Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` and `HttpRequestService.getActivityJson` allows an attacker to create fake user profiles and forged notes. The spoofed users will appear to be from a different instance than the one where they actually exist, and the forged notes will appear to be posted by a different user. Vulnerable Misskey instances will accept the spoofed objects as valid, allowing an attacker to impersonate other users and instances. The attacker retains full control of the spoofed user / note and can interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityLow
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Affected products

Misskey< 2024.11.0 · 2024.11.0

Remediation

Fixed in
Misskey≥ 2024.11.0

References

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Frequently asked

Is CVE-2024-52591 being actively exploited?

CVE-2024-52591 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.32%.

How severe is CVE-2024-52591?

CVE-2024-52591 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 0.32% probability of exploitation.

Which products are affected by CVE-2024-52591?

Affected products include Misskey.

How do I fix CVE-2024-52591?

Upgrade affected software to a fixed version, for example Misskey 2024.11.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-52591 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.