vulnerability
Alpine Linux: CVE-2021-40823: Authentication Bypass by Spoofing
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | Sep 13, 2021 | Aug 22, 2024 | Dec 5, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Sep 13, 2021
Added
Aug 22, 2024
Modified
Dec 5, 2025
Description
A logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.
Solutions
alpine-linux-upgrade-riot-webalpine-linux-upgrade-element-web
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