vulnerability
Debian: CVE-2022-39254: python-matrix-nio -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:C/A:N) | Sep 29, 2022 | Jul 30, 2024 | Aug 15, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:C/A:N)
Published
Sep 29, 2022
Added
Jul 30, 2024
Modified
Aug 15, 2025
Description
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.
Solution
debian-upgrade-python-matrix-nio
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