{"affected":[{"defaultStatus":"unaffected","product":"Mi Browser (com.mi.globalbrowser)","source":"CNA: VulnCheck","vendor":"Xiaomi","versions":[{"lessThan":"14.66.0","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-127209","cwes":["CWE-22"],"description":"Xiaomi Mi Browser Android Application (com.mi.globalbrowser) before 14.66.0-gn contains a path traversal vulnerability in the exported ThirdDocViewerActivity component, where CopyExternalFile.copyFromUri() copies content provider streams using an unsanitized filename from the _display_name column without basename reduction or canonical-path checks. A zero-permission co-resident malicious application can supply a crafted content provider with a _display_name containing .. sequences to make the browser write attacker-controlled bytes to an arbitrary path within its external storage directory, escaping the intended cache_docs staging location without requiring user interaction.","epss":null,"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://github.com/actuator/cve/blob/main/Xiaomi/2026.07.09%20CVD%20-%20Xiaomi%20Mi%20Browser.md"},{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/actuator/cve/blob/main/Xiaomi/2026.07.09%20CVD%20-%20Xiaomi%20Mi%20Browser.md"}],"kev":null,"metrics":[{"score":5.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":4,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},{"score":5.1,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":4,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}],"modifiedAt":1794530015954,"publishedAt":1794518298139,"references":[{"source":"CNA: VulnCheck","tags":["technical-description","exploit"],"url":"https://github.com/actuator/cve/blob/main/Xiaomi/2026.07.09%20CVD%20-%20Xiaomi%20Mi%20Browser.md"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/xiaomi-mi-browser-path-traversal-via-thirddocvieweractivity"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/actuator/cve/blob/main/Xiaomi/2026.07.09%20CVD%20-%20Xiaomi%20Mi%20Browser.md"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/actuator/cve/blob/main/Xiaomi/2026.07.09%20CVD%20-%20Xiaomi%20Mi%20Browser.md"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/xiaomi-mi-browser-path-traversal-via-thirddocvieweractivity"}],"remediation":[],"revision":"e825f181fb8b0d89964cd8071646808a01b38ec54ac639580ce1cb8d266cda75","sources":[{"modifiedAt":1794530015954,"name":"CNA: VulnCheck","retrievedAt":1794532164710,"url":"https://www.cve.org/CVERecord?id=CVE-2026-127209"},{"modifiedAt":1794521961247,"name":"NVD","retrievedAt":1794529645988,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-127209"}],"ssvc":{"assessedAt":1794529970170,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Xiaomi Mi Browser < 14.66.0 Path Traversal via ThirdDocViewerActivity","updatedAt":1794532164710}