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PYSEC-2021-134
Quick fix
PYSEC-2021-134 — matrix-synapse: upgrade to the fixed version with the command below.
pip install --upgrade 'matrix-synapse>=e54746bdf7d5c831eabe4dcea76a7626f1de73df'Details
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the notification emails sent for notifications for missed messages or for an expiring account are subject to HTML injection. In the case of the notification for missed messages, this could allow an attacker to insert forged content into the email. The account expiry feature is not enabled by default and the HTML injection is not controllable by an attacker. This is fixed in version 1.27.0.
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI/matrix-synapse
Introduced in:
0Fixed in: e54746bdf7d5c831eabe4dcea76a7626f1de73dfFix
pip install --upgrade 'matrix-synapse>=e54746bdf7d5c831eabe4dcea76a7626f1de73df'