EPSS
Percentile
51.7%
The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly.
on_get_missing_events
github.com/matrix-org/synapse
github.com/matrix-org/synapse/commit/0834b49c6a9b6c597a154d4b2dfcf8fff90699ec
github.com/matrix-org/synapse/pull/3371
github.com/matrix-org/synapse/releases/tag/v0.31.1
nvd.nist.gov/vuln/detail/CVE-2018-12291