CVE-2022-41904 MEDIUM

CVE-2022-41904: Element iOS is vulnerable due to missing decoration for events decrypted with untrusted Megolm sessions

Vendor Vector-Im
Product element-ios
Weakness CWE-357
Published November 11, 2022
Last update April 23, 2025
View on NVD All CVEs

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

Element iOS is an iOS Matrix client provided by Element. It is based on MatrixSDK. Prior to version 1.9.7, events encrypted using Megolm for which trust could not be established did not get decorated accordingly (with warning shields). Therefore a malicious homeserver could inject messages into the room without the user being alerted that the messages were not sent by a verified group member, even if the user has previously verified all group members. This issue has been patched in Element iOS 1.9.7. There are currently no known workarounds.

Key dates

02Disclosure timeline

November 11, 2022 CVE published
April 23, 2025 Record updated