CVE-2026-46714: Misskey-Dev Misskey

Medium severity, CVSS 5.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4.

Affected products

• Misskey-Dev Misskey: from 8.63.0, before 2026.5.4 (fixed in 2026.5.4)

Published 2026-08-03. Last modified 2026-09-08.