CVE-2026-28432: HTTP signature verification can be bypassed
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-28432?
CVE-2026-28432 is a critical vulnerability that allows the bypass of HTTP signature verification in Misskey servers prior to version 2026.3.1.
How do I fix CVE-2026-28432?
To address CVE-2026-28432, update your Misskey server to version 2026.3.1 or later.
Who is affected by CVE-2026-28432?
All Misskey servers running versions prior to 2026.3.1 are affected by CVE-2026-28432.
What are the implications of CVE-2026-28432?
The implications of CVE-2026-28432 include the potential for unauthorized actions due to the bypassing of HTTP signature verification.
Is CVE-2026-28432 related to federation features in Misskey?
Yes, CVE-2026-28432 is related to federation features but it impacts all Misskey servers regardless of federation settings.