CVE-2022-41904Network attack vector

Message spoofing via missing untrusted-session warnings

Published Nov 11, 2022 · Updated Apr 23, 2025

Insufficient UI warning in Element Classic iOS before 1.9.7 allows remote attackers controlling a homeserver to spoof trusted messages. The room-event rendering path omits the warning-shield decoration when a Megolm event is decrypted through a session whose trust cannot be established. Control of the affected account's homeserver is required; injected messages can be mistaken for messages from verified room members, without reported data disclosure or service interruption.

CVSS severity6.5
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient UI warning in Element Classic iOS before 1.9.7 allows remote attackers controlling a homeserver to spoof trusted messages. The room-event rendering path omits the warning-shield decoration when a Megolm event is decrypted through a session whose trust cannot be established. Control of the affected account's homeserver is required; injected messages can be mistaken for messages from verified room members, without reported data disclosure or service interruption.

The record

CVE
CVE-2022-41904
Published
Nov 11, 2022
Updated
Apr 23, 2025
Vendor
Element HQ
Product
Element Classic iOS
Classifications
CWE-357, T1565.002
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.9.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Element HQ · Element Classic iOSversion=< 1.9.7

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-357Insufficient UI Warning of Dangerous Operations
T1565.002Transmitted Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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