CVE-2026-28432
HIGHMisskey < 2026.3.1 - HTTP Signature Verification Bypass
Title source: llmDescription
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.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://github.com/misskey-dev/misskey/security/advisories/GHSA-grwc-c762-gcvp
Scores
CVSS v3
7.5
EPSS
0.0015
EPSS Percentile
4.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-347
Status
published
Products (1)
misskey/misskey
< 2026.3.1
Published
Mar 10, 2026
Tracked Since
Mar 10, 2026