https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 17 Oct 2026 18:08:00 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-193073 EUVD-2026-193073 https://cve.radiocsirt.org/vuln/euvd-2026-193073 https://cve.radiocsirt.org/vuln/fkie_cve-2023-38691 <p>matrix-appservice-bridge provides an API for setting up bridges. Starting in version 4.0.0 and prior to versions 8.1.2 and 9.0.1, a malicious Matrix server can use a foreign user&#39;s MXID in an OpenID exchange, allowing a bad actor to impersonate users when using the provisioning API. The library does not check that the servername part of the `sub` parameter (containing the user&#39;s *claimed* MXID) is the the same as the servername we are talking to. A malicious actor could spin up a server on any given domain, respond with a `sub` parameter according to the user they want to act as and use the resulting token to perform provisioning requests. Versions 8.1.2 and 9.0.1 contain a patch. As a workaround, disable the provisioning API.</p> <p>matrix-appservice-bridge provides an API for setting up bridges. Starting in version 4.0.0 and prior to versions 8.1.2 and 9.0.1, a malicious Matrix server can use a foreign user&#39;s MXID in an OpenID exchange, allowing a bad actor to impersonate users when using the provisioning API. The library does not check that the servername part of the `sub` parameter (containing the user&#39;s *claimed* MXID) is the the same as the servername we are talking to. A malicious actor could spin up a server on any given domain, respond with a `sub` parameter according to the user they want to act as and use the resulting token to perform provisioning requests. Versions 8.1.2 and 9.0.1 contain a patch. As a workaround, disable the provisioning API.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2023-38691 https://cve.radiocsirt.org/vuln/ghsa-vc7j-h8xg-fv5x <p><strong>Affected:</strong> npm: matrix-appservice-bridge</p> <p>### Impact</p> <p>A malicious Matrix server can use a foreign user&#39;s MXID in an OpenID exchange, allowing a bad actor to impersonate users when using the provisioning API.</p> <p>### Details</p> <p>The library does not check that the servername part of the `sub` parameter (containing the user&#39;s *claimed* MXID) is the same as the servername we are talking to. A malicious actor could spin up a server on any given domain, respond with a `sub` parameter according to the user they want to act as and use the resulting token to perform provisioning requests.</p> <p>### Workarounds</p> <p>Disable the provisioning API. If the bridge does not use the provisioning API, you are not vulnerable.</p> <p><strong>Affected:</strong> npm: matrix-appservice-bridge</p> <p>### Impact</p> <p>A malicious Matrix server can use a foreign user&#39;s MXID in an OpenID exchange, allowing a bad actor to impersonate users when using the provisioning API.</p> <p>### Details</p> <p>The library does not check that the servername part of the `sub` parameter (containing the user&#39;s *claimed* MXID) is the same as the servername we are talking to. A malicious actor could spin up a server on any given domain, respond with a `sub` parameter according to the user they want to act as and use the resulting token to perform provisioning requests.</p> <p>### Workarounds</p> <p>Disable the provisioning API. If the bridge does not use the provisioning API, you are not vulnerable.</p> https://cve.radiocsirt.org/vuln/ghsa-vc7j-h8xg-fv5x https://cve.radiocsirt.org/vuln/gsd-2023-38691 gsd-2023-38691 https://cve.radiocsirt.org/vuln/gsd-2023-38691