{"schemaVersion":3,"id":"CVE-2026-92162","aliases":["UBUNTU-CVE-2026-92162","DEBIAN-CVE-2026-92162"],"status":"published","duplicateOf":null,"title":null,"description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Prior to version 1.18.1, on systems where at least one OCI remote is configured (most common on Fedora systems), a malicious local user in an active local session could use a crafted architecture name to trick the `flatpak-system-helper` process into creating a root-owned directory tree with contents determined by the OCI remote, plus a root-owned `lock` file and `icons` directory, outside the intended root directory. If this vulnerability is combined with other vulnerabilities also fixed in 1.18.1, the combination can lead to local root privilege escalation. This particular vulnerability is not believed to be exploitable if there are no OCI remotes configured (common on non-Fedora systems). Version 1.18.1 patches the issue.","dates":{"published":"2026-10-20T14:39:50.538Z","modified":"2026-10-20T15:32:18.640Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.2,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.2,"severity":"high","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.2,"severity":"high","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.html"}],"affected":[{"vendor":"debian","product":"flatpak","name":"flatpak","label":"flatpak","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/flatpak","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1.16.6-1~deb13u3","noFixRecorded":false,"fixedIn":null},{"text":"< 1.18.1-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 1.16.6-1~deb13u3 | < 1.18.1-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"flatpak","name":"flatpak","label":"flatpak","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/flatpak","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"flatpak","product":"flatpak","name":"flatpak","label":"flatpak","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.18.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.18.1","eol":null,"hubHref":"/vendor/flatpak/flatpak"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/CVE-2026-92162","label":"ubuntu.com/security/CVE-2026-92162","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92162","label":"www.cve.org/CVERecord?id=CVE-2026-92162","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-v2gw-v9h5-9q4x","label":"github.com/flatpak/flatpak/security/advisories/GHSA-v2gw-v9h5-9q4x","hostname":"github.com","tags":["REPORT","X Refsource CONFIRM"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-92162","label":"security-tracker.debian.org/tracker/CVE-2026-92162","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://github.com/flatpak/flatpak/pull/6768","label":"github.com/flatpak/flatpak/pull/6768","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/flatpak/flatpak/commit/01773f84021dd090b2426f79675f94f2564f9279","label":"github.com/flatpak/flatpak/commit/01773f84021dd090b2426f79675f94f2564f9279","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/flatpak/flatpak/commit/19456b916842b079af833a86b9ab89c5db154b92","label":"github.com/flatpak/flatpak/commit/19456b916842b079af833a86b9ab89c5db154b92","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/flatpak/flatpak/commit/aeb369a2723506fabc1f701ef7a0dc6c97c4b983","label":"github.com/flatpak/flatpak/commit/aeb369a2723506fabc1f701ef7a0dc6c97c4b983","hostname":"github.com","tags":["X Refsource MISC"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0342","SUSE-SU-2026:4610-1"],"duplicates":[],"related":["SUSE-SU-2026:4610-1"]},"timeline":[{"kind":"published","date":"2026-10-20T14:39:50.538Z","label":"Published","detail":"Vulnerability first 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