CVE-2018-12291

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CVSS 3.0

7.5 high

EPSS

2%p77

Published

Jun 13, 2018 (Jun 13, 2018)

Modified

Jun 17, 2026

Description

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.

Vendors: matrix
Products: synapse
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.8%)

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