https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 00:43:11 +0000 https://cve.radiocsirt.org/vuln/cve-2021-29471 <p><strong>Affected:</strong> matrix-org synapse</p> <p>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 1.33.2 &#34;Push rules&#34; can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.</p> <p><strong>Affected:</strong> matrix-org synapse</p> <p>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 1.33.2 &#34;Push rules&#34; can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.</p> https://cve.radiocsirt.org/vuln/cve-2021-29471 https://cve.radiocsirt.org/vuln/ghsa-x345-32rc-8h85 <p><strong>Affected:</strong> PyPI: matrix-synapse</p> <p>### Impact</p> <p>&#34;Push rules&#34; can specify [conditions](https://matrix.org/docs/spec/client_server/r0.6.1#conditions) under which they will match, including `event_match`, which matches event content against a pattern including wildcards.</p> <p>Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events.</p> <p>### Patches</p> <p>The issue is patched by https://github.com/matrix-org/synapse/commit/03318a766cac9f8b053db2214d9c332a977d226c.</p> <p>### Workarounds</p> <p>A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.</p> <p>### For more information</p> <p>If you have any questions or comments about this advisory, email us at security@matrix.org.</p> <p><strong>Affected:</strong> PyPI: matrix-synapse</p> <p>### Impact</p> <p>&#34;Push rules&#34; can specify [conditions](https://matrix.org/docs/spec/client_server/r0.6.1#conditions) under which they will match, including `event_match`, which matches event content against a pattern including wildcards.</p> <p>Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events.</p> <p>### Patches</p> <p>The issue is patched by https://github.com/matrix-org/synapse/commit/03318a766cac9f8b053db2214d9c332a977d226c.</p> <p>### Workarounds</p> <p>A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.</p> <p>### For more information</p> <p>If you have any questions or comments about this advisory, email us at security@matrix.org.</p> https://cve.radiocsirt.org/vuln/ghsa-x345-32rc-8h85