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CVE-2024-52590

Missing validation allows spoofed profiles in Misskey

Published: Dec 18, 2024Updated: Nov 26, 2025 Sources: CVE List NVDCWE-20
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 75.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise 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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-20

Affected Products

misskeymisskey-dev
SaaS
Communications / messaging-chat
misskeymisskey
SaaS
Communications / messaging-chat
misskey-devoss-projectCommunicationsaka misskey, summaly
misskeyoss-projectCommunicationsaka misskey, summaly

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-7vgr-p3vc-p4h2
github.com

Timeline

Published
Dec 18, 2024
Last Updated
Nov 26, 2025

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