CVE-2019-18835

Published November 8th, 2019

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CVSS v3

9.8

CRITICAL

CVSS v2

7.5

HIGH

Affected

PROJECT

Description

Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected servers.

matrix-org/synapse

Synapse: Matrix homeserver written in Python/Twisted.

GitHub

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