CVE-2026-45078

Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, local authenticated users can cause Synapse to starve other requests of CPU and lead to other requests failing, causing other users to be denied service. This vulnerability is fixed in 1.152.1...

DEBIAN-CVE-2023-32683

Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. A discovered oEmbed or image URL can bypass the urlpreviewurlblacklist setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the...