CVE-2026-28432

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/10/2026

Last Modified3/13/2026

Sourcenvd

Honeypot Sightings0

Affected Products

misskey:misskey

Weaknesses (CWE)

CWE-347

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-grwc-c762-gcvp(security-advisories@github.com)

IOC Correlations

No correlations recorded

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