{"id":"CVE-2022-21682","summary":"flatpak-builder can access files outside the build directory.","details":"Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies `finish-args` last in the build. At this point the build directory will have the full access that is specified in the manifest, so running `flatpak build` against it will gain those permissions. Normally this will not be done, so this is not problem. However, if `--mirror-screenshots-url` is specified, then flatpak-builder will launch `flatpak build --nofilesystem=host appstream-utils mirror-screenshots` after finalization, which can lead to issues even with the `--nofilesystem=host` protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the `appstream-util` binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of `--nofilesystem=home` and `--nofilesystem=host`.","aliases":["GHSA-8ch7-5j3h-g4fx"],"modified":"2026-05-30T18:31:25.847414Z","published":"2022-01-13T00:00:00Z","related":["ALSA-2022:7458","SUSE-SU-2022:0712-1","openSUSE-SU-2022:0712-1","openSUSE-SU-2024:11755-1","openSUSE-SU-2024:11756-1"],"database_specific":{"cwe_ids":["CWE-22"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21682.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21682.json"},{"type":"ADVISORY","url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21682"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202312-12"},{"type":"ADVISORY","url":"https://www.debian.org/security/2022/dsa-5049"},{"type":"FIX","url":"https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a"},{"type":"FIX","url":"https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/flatpak/flatpak","events":[{"introduced":"0"},{"fixed":"e50a8fd4c90c3a1dd581a516c4f24ada03a9bf06"},{"introduced":"bcdc073041e0c93e15aa108b94cb7a39a79dcdf3"},{"fixed":"103ed5c02c8453580fac19e5122d150f44f6774f"},{"fixed":"445bddeee657fdc8d2a0a1f0de12975400d4fc1a"},{"fixed":"4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.10.7"},{"introduced":"1.11.1"},{"fixed":"1.12.4"}],"cpe":"cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:*"}}],"versions":["1.10.6","1.12.3","1.12.2","1.11.2","1.10.5","1.12.1","1.10.4","1.12.0","1.10.3","1.11.3","1.11.1","1.10.2","1.10.1","1.10.0","1.9.3","1.9.2","1.9.1","1.8.0","1.7.3","1.7.2","1.7.1","1.6.2","1.6.1","1.6.0","1.5.2","1.5.1","1.5.0","1.4.0","1.3.4","1.3.3","1.3.2","1.3.1","1.3.0","1.2.1","1.2.0","1.1.3","1.1.2","1.1.1","1.1.0","1.0.3","1.0.2","1.0.1","1.0.0","0.99.3","0.99.2","0.99.1","0.11.8.3","0.11.8.2","0.11.8.1","0.11.8","0.11.7","0.11.6","0.11.5","0.11.4","0.11.3","0.11.2","0.11.1","0.10.2","0.10.1","0.10.0","0.9.99","0.9.98.2","0.9.98.1","0.9.98","0.9.12","0.9.11","0.9.10","0.9.9","0.9.8","0.9.7","0.9.6","0.9.5","0.9.4","0.9.3","0.9.2","0.9.1","0.8.1","0.8.0","0.6.14","0.6.13","0.6.12","0.6.11","0.6.10","0.6.9","0.6.8","0.6.7","0.6.6","0.6.5","0.6.4","0.6.3","0.6.2","0.6.1","0.6.0","0.5.2","0.5.1","0.5.0","0.4.13","0.4.12","0.4.11","0.4.10","0.4.9","0.4.8","0.4.7","0.4.6","0.4.5","0.4.4","0.4.3","0.4.2.1","0.4.2","0.4.1","0.4.0","0.3.6","0.3.5","0.3.4","0.3.3","0.3.2","0.3.1","0.3","0.2.1","0.2","0.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-21682.json","vanir_signatures_modified":"2026-05-30T18:31:25Z","vanir_signatures":[{"id":"CVE-2022-21682-d6e19a19","digest":{"line_hashes":["335221313745204022963925693886610798731","193543932040195596678132101919836990364","296999067578826632910010254586433568311","33628502977202159604853091634660549732","269673998523759387784516219444713040028","312155826244738359740619260271225175653","91634086283313138900550106657023652840","79595378159694829440634157434541448717","261436272463476185797766714628155868380","1588711882055356898561828584048074808"],"threshold":0.9},"target":{"file":"common/flatpak-context.c"},"deprecated":false,"source":"https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a","signature_version":"v1","signature_type":"Line"},{"id":"CVE-2022-21682-e4fb71fa","digest":{"length":1825,"function_hash":"219470317140256007070028088801532618232"},"target":{"function":"flatpak_context_merge","file":"common/flatpak-context.c"},"deprecated":false,"source":"https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a","signature_version":"v1","signature_type":"Function"}]}},{"ranges":[{"type":"GIT","repo":"https://github.com/flatpak/flatpak-builder","events":[{"introduced":"0"},{"fixed":"4e9fb6a3e6c405f10797f12cc5c8c0a6ce99282d"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"0"},{"fixed":"1.2.2"}],"cpe":"cpe:2.3:a:flatpak:flatpak-builder:*:*:*:*:*:*:*:*"}}],"versions":["1.2.1","1.2.0","1.1.2","1.1.1","1.0.14","1.0.12","1.0.11","1.0.10","1.0.9","1.0.8","1.0.7","1.0.6","1.0.5","1.0.4","1.0.3","1.0.2","1.0.1","1.0.0","0.99.3","0.99.2","0.99.1","0.10.10","0.10.9","0.10.8","0.10.7","0.10.6","0.10.5","0.10.4","0.10.3","0.10.2","0.10.1","0.10.0","0.9.99","0.9.98","0.9.11","0.9.9"],"database_specific":{"source":"https://storage.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