CVE-2026-28432

Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vulnerability that allows bypassing HTTP signature verification. Although this is a vulnerability related to federation, it affects all servers regardless of whether federation is enabled or disabled. This vulnerability is fixed in 2026.3.1.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-grwc-c762-gcvp	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*

History

13 Mar 2026, 17:18

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CPE		cpe:2.3:a:misskey:misskey::::::::
References	~~() https://github.com/misskey-dev/misskey/security/advisories/GHSA-grwc-c762-gcvp -~~	() https://github.com/misskey-dev/misskey/security/advisories/GHSA-grwc-c762-gcvp - Vendor Advisory
Summary		(es) Misskey es una plataforma de redes sociales de código abierto y federada. Todos los servidores Misskey anteriores a 2026.3.1 contienen una vulnerabilidad que permite eludir la verificación de firmas HTTP. Aunque esta es una vulnerabilidad relacionada con la federación, afecta a todos los servidores independientemente de si la federación está habilitada o deshabilitada. Esta vulnerabilidad está corregida en 2026.3.1.
First Time		Misskey misskey Misskey

10 Mar 2026, 07:43

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-10 07:43

Updated : 2026-03-13 17:18

NVD link : CVE-2026-28432

Mitre link : CVE-2026-28432

CVE.ORG link : CVE-2026-28432

JSON object : View

Products Affected

misskey

misskey

CWE

CWE-347

Improper Verification of Cryptographic Signature

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