high7.5
CVE-2026-28432
Misskey is an open source, federated social media platform.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Misskey | Misskey | before 2026.3.1 |