MEDIUM 5.1 NVD
CVE-2026-55644
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://.
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.
References
- https://github.com/element-hq/element-x-ios/commit/63592e48c1a1e47f75693045efd85a7d4468ea8
- https://github.com/element-hq/element-x-ios/pull/5515
- https://github.com/element-hq/element-x-ios/releases/tag/release/26.05.0
- https://github.com/element-hq/element-x-ios/security/advisories/GHSA-54w7-rw44-49m7
This medium severity vulnerability with a CVSS score of 5.1 was published on 2026-10-19 via NVD.
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