{"id":"CVE-2026-55644","state":"PUBLISHED","title":"Element X iOS: io.element.call deeplink allows attacker-controlled HTTPS origin and may grant mic/camera to that origin","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.","publishedAt":"2026-10-19T17:54:58.499Z","updatedAt":"2026-10-22T20:55:32.146Z","severity":{"score":5.1,"label":"Medium","version":"4.0","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","source":"GitHub_M"},"assigner":"GitHub_M","products":["element-hq element-x-ios"],"affected":[{"vendor":"element-hq","product":"element-x-ios","versions":[{"version":"< 26.05.0","status":"affected"}]}],"references":["https://github.com/element-hq/element-x-ios/security/advisories/GHSA-54w7-rw44-49m7","https://github.com/element-hq/element-x-ios/pull/5515","https://github.com/element-hq/element-x-ios/commit/63592e48c1a1e47f75693045efd85a7d4468ea84","https://github.com/element-hq/element-x-ios/releases/tag/release/26.05.0"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55644.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55644","state":"PUBLISHED","datePublished":"2026-10-19T17:54:58.499Z","dateUpdated":"2026-10-22T20:55:32.146Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T23:52:12.058Z"},"containers":{"cna":{"title":"Element X iOS: io.element.call deeplink allows attacker-controlled HTTPS origin and may grant mic/camera to that origin","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"element-hq","product":"element-x-ios","versions":[{"version":"< 26.05.0","status":"affected"}]}],"references":[{"url":"https://github.com/element-hq/element-x-ios/security/advisories/GHSA-54w7-rw44-49m7","name":"https://github.com/element-hq/element-x-ios/security/advisories/GHSA-54w7-rw44-49m7","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/element-hq/element-x-ios/pull/5515","name":"https://github.com/element-hq/element-x-ios/pull/5515","tags":["x_refsource_MISC"]},{"url":"https://github.com/element-hq/element-x-ios/commit/63592e48c1a1e47f75693045efd85a7d4468ea84","name":"https://github.com/element-hq/element-x-ios/commit/63592e48c1a1e47f75693045efd85a7d4468ea84","tags":["x_refsource_MISC"]},{"url":"https://github.com/element-hq/element-x-ios/releases/tag/release/26.05.0","name":"https://github.com/element-hq/element-x-ios/releases/tag/release/26.05.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-19T17:54:58.499Z"},"source":{"advisory":"GHSA-54w7-rw44-49m7","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-22T20:55:15.667586Z","id":"CVE-2026-55644","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-22T20:55:32.146Z"}}]}}}