CVE-2024-52591

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 v3 9.3 CRITICAL

9.3^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-m2gq-69fp-6hv4	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:misskey:misskey::::::::
	cpe:2.3:a:misskey:misskey:2024.11.0:alpha0::::::
	cpe:2.3:a:misskey:misskey:2024.11.0:alpha1::::::
	cpe:2.3:a:misskey:misskey:2024.11.0:alpha2::::::

History

26 Nov 2025, 16:25

Type	Values Removed	Values Added
First Time		Misskey Misskey misskey
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.3
CPE		cpe:2.3:a:misskey:misskey:2024.11.0:alpha2:::::: cpe:2.3:a:misskey:misskey:2024.11.0:alpha1:::::: cpe:2.3:a:misskey:misskey:::::::: cpe:2.3:a:misskey:misskey:2024.11.0:alpha0::::::
References	~~() https://github.com/misskey-dev/misskey/security/advisories/GHSA-m2gq-69fp-6hv4 -~~	() https://github.com/misskey-dev/misskey/security/advisories/GHSA-m2gq-69fp-6hv4 - Third Party Advisory

Information

Published : 2024-12-18 20:15

Updated : 2025-11-26 16:25

NVD link : CVE-2024-52591

Mitre link : CVE-2024-52591

CVE.ORG link : CVE-2024-52591

JSON object : View

Products Affected

misskey

misskey

CWE

CWE-20

Improper Input Validation

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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."}, {"lang": "es", "value": "Misskey es una plataforma de redes sociales federada de c\u00f3digo abierto. En las versiones afectadas, la falta de validaci\u00f3n en `ApRequestService.signedGet` y `HttpRequestService.getActivityJson` permite a un atacante crear perfiles de usuario falsos y notas falsificadas. Los usuarios falsificados parecer\u00e1n ser de una instancia diferente a la que realmente existen, y las notas falsificadas parecer\u00e1n haber sido publicadas por un usuario diferente. Las instancias vulnerables de Misskey aceptar\u00e1n los objetos falsificados como v\u00e1lidos, lo que permite a un atacante hacerse pasar por otros usuarios e instancias. El atacante conserva el control total del usuario/nota falsificados y puede interactuar como una cuenta real. Este problema se ha solucionado en la versi\u00f3n 2024.11.0-alpha.3. Se recomienda a los usuarios que actualicen. No existen workarounds conocidos para esta vulnerabilidad."}], "lastModified": "2025-11-26T16:25:19.597", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "87F71DD8-FFC9-4029-AE69-087D436A4A30", "versionEndExcluding": "2024.11.0"}, {"criteria": "cpe:2.3:a:misskey:misskey:2024.11.0:alpha0:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1BF4BE35-2292-4FD3-BE70-1ECB93C759D5"}, {"criteria": "cpe:2.3:a:misskey:misskey:2024.11.0:alpha1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E74599B9-F76E-40E2-A2BC-297FBCD4114A"}, {"criteria": "cpe:2.3:a:misskey:misskey:2024.11.0:alpha2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43BB14C6-8368-49E6-A1EF-6218C7ED998C"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}