49016

**Name of the Vulnerable Software and Affected Versions** Misskey versions 8.45.0 through 2026.3.0 **Description** Misskey, an open source, federated social media platform, has an issue where insufficient permission checks and proper input validation can allow unauthorized access to data. This can occur regardless of federation status and could lead to a significant data breach. **Recommendations** Update to version 2026.3.1 or later.

**Name of the Vulnerable Software and Affected Versions** Misskey versions prior to 2026.3.1 **Description** Misskey is a federated social media platform. All servers prior to version 2026.3.1 are susceptible to an issue that allows bypassing HTTP signature verification. This affects all servers, even those with federation disabled. **Recommendations** Update to version 2026.3.1 or later.