Element X iOS is a Matrix iOS Client provided by Element. Element X iOS before version 26.05.0 fails to check the URL allowlist when parsing io.element.call://. If an attacker is able to trick the user into opening a maliciously crafted io.element.call:// URL, they are able to load an attacker-controlled origin inside the call screen's WKWebView which will be granted device microphone and camera permissions (provided the user has previously granted these permissions to Element X iOS). This issue has been patched in version 26.05.0.
History

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Element-hq
Element-hq element-x-ios
Vendors & Products Element-hq
Element-hq element-x-ios

Mon, 19 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Description Element X iOS is a Matrix iOS Client provided by Element. Element X iOS before version 26.05.0 fails to check the URL allowlist when parsing io.element.call://. If an attacker is able to trick the user into opening a maliciously crafted io.element.call:// URL, they are able to load an attacker-controlled origin inside the call screen's WKWebView which will be granted device microphone and camera permissions (provided the user has previously granted these permissions to Element X iOS). This issue has been patched in version 26.05.0.
Title Element X iOS: io.element.call deeplink allows attacker-controlled HTTPS origin and may grant mic/camera to that origin
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-19T17:54:58.499Z

Updated: 2026-10-22T20:55:32.146Z

Reserved: 2026-06-16T23:52:12.058Z

Link: CVE-2026-55644

cve-icon Vulnrichment

Updated: 2026-10-22T20:55:23.920Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T18:17:08.007

Modified: 2026-10-22T21:17:19.013

Link: CVE-2026-55644

cve-icon Redhat

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