{"id":"CVE-2026-97026","aliases":[],"cve":{"records":[{"id":"CVE-2026-97026","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-23T21:11:59.431Z","published":"2026-09-28T20:57:03.702Z","modified":"2026-11-06T20:01:25.676Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-06T20:01:25.676Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-30T20:11:11.704Z"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-97026","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542637","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-r9w3-qx54-qvc8","tags":[],"source":"redhat"}],"weaknesses":[{"id":"CWE-378","description":"Creation of Temporary File With Insecure Permissions","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-09-30T19:42:12.533797Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Flatpak: flatpak: world-writable temporary child repositories in system-helper cache path","titleSource":"redhat","descriptionSource":"redhat","description":"Flatpak creates temporary child repository directories under the user cache with world-writable permissions (0777). On multi-user systems with a permissive umask, other local users could read or modify the temporary directory used while installing apps or runtimes, potentially causing installation failures (denial of service); tampered content would fail signature/digest verification rather than being trusted.","score":3.9,"severity":"low","published":"2026-09-28T20:57:03.702Z","modified":"2026-11-06T20:01:25.676Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:10"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"}],"remediation":[{"text":"Set a umask that does not allow other users to write to the cache directory, for example: umask 022.\n\nNote that a umask that does not allow read/exec access by all (for example 027 or 077) will prevent the flatpak-system-helper from reading the temporary directory directly, resulting in falling back to copying the repository inefficiently, with a warning.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"}],"references":["https://access.redhat.com/security/cve/CVE-2026-97026","https://bugzilla.redhat.com/show_bug.cgi?id=2542637","https://github.com/flatpak/flatpak/security/advisories/GHSA-r9w3-qx54-qvc8"],"sources":[{"name":"CVE","id":"CVE-2026-97026","modified":"2026-11-06T20:01:25.676Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","score":3.9}],"sourceAffected":[],"observedAt":"2026-11-06T22:20:13.476Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T23:35:33.875Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-07T00:20:42.333Z","attemptedAt":"2026-11-07T00:20:42.333Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-07T00:20:40.844Z","attemptedAt":"2026-11-07T00:20:40.844Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-07T00:20:43.497Z","attemptedAt":"2026-11-07T00:20:43.497Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-07T00:20:41.059Z","attemptedAt":"2026-11-07T00:20:41.059Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-97026","url":"https://www.first.org/epss/","probability":0.00104,"percentile":0.01045,"date":"2026-11-06","checkedAt":"2026-11-07T00:20:41.059Z"},{"source":"NVD","id":"CVE-2026-97026","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97026","modified":"2026-11-06T20:17:32.017","score":3.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","checkedAt":"2026-11-07T00:20:42.333Z"},{"source":"ENISA EUVD","id":"EUVD-2026-88553","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88553","modified":"Nov 6, 2026, 8:01:25 PM","score":3.9,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L","checkedAt":"2026-11-07T00:20:43.497Z"}],"aiSummary":{"text":"Flatpak creates world-writable temporary directories, potentially causing installation failures on multi-user systems. Local users could read or modify these directories. Tampered content would fail verification.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T22:26:30.667Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-97026"}]}}