EUVD-2026-10367

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 o...

PT-2026-24120

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...

Mastodon Vulnerability Allows Hackers to Hijack Any Decentralized Account

The decentralized social network Mastodon has disclosed a critical security flaw that enables malicious actors to impersonate and take over any account. "Due to insufficient origin validation in all Mastodon, attackers can impersonate and take over any remote account," the maintainers said in a...