Filtered by vendor Matrix-nio Project Subscriptions
Filtered by product Matrix-nio Subscriptions
Total 1 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2022-39254 1 Matrix-nio Project 1 Matrix-nio 2024-08-03 8.6 High
matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue.