CVE-2026-28432 — HTTP signature verification can be bypassed

CVE-2026-28432

HTTP signature verification can be bypassed PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
misskey-dev / misskey	affected < 2026.3.1

CWE

CWE-347

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.