{"id":"CVE-2026-96275","aliases":[],"title":"Flatpak: flatpak: arbitrary write access as root via extra-data extraction","titleSource":"redhat","descriptionSource":"redhat","products":[{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[{"version":"0:1.16.0-9.el10_2.4","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[{"version":"0:1.12.9-7.el8_10","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[{"version":"0:1.12.9-4.el9_8.4","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","platforms":[],"versions":[{"version":"0:1.12.9-3.el9_4.5","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.6 Extended Update Support","platforms":[],"versions":[{"version":"0:1.12.9-4.el9_6.5","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"affected","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"}],"remediation":[{"text":"Avoid installing Flatpak extensions from non-trusted sources.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"}],"description":"A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.","severity":"high","score":8.8,"published":"2026-09-23T15:01:38.344Z","modified":"2026-10-26T23:46:49.907Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://access.redhat.com/errata/RHSA-2026:80497","https://access.redhat.com/errata/RHSA-2026:80498","https://access.redhat.com/errata/RHSA-2026:80687","https://access.redhat.com/errata/RHSA-2026:89733","https://access.redhat.com/errata/RHSA-2026:90364","https://access.redhat.com/security/cve/CVE-2026-96275","https://bugzilla.redhat.com/show_bug.cgi?id=2539416","https://github.com/flatpak/flatpak/security/advisories/GHSA-fqx6-vh4p-42cg"],"sources":[{"name":"CVE","id":"CVE-2026-96275","modified":"2026-10-26T23:46:49.907Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-96275"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T01:35:32.302Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}