https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-xvqg-mv25-rwvw Matrix's IRC bridge software has a high-severity vulnerability that affects Matrix rooms that are bridged to IRC. Libera.Chat have mitigated what we can, but bridge operators must upgrade to the newest version. This does not have any impact on IRC or IRC users - a courtesy toot for those who may need to upgrade.