{"id":"CVE-2026-74859","title":"The shell theme installer in gnome-tweaks extracts user-supplied ZIP archives without validating archive member paths","summary":"The shell theme installer in gnome-tweaks extracts user-supplied ZIP archives without validating archive member paths. As a result, a crafted theme archive can write files outside ~/.themes by using ../ path traversal, absolute paths, or…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H","cwe":["CWE-22"],"vendor":"Red Hat","product":"gnome-tweaks","affected":["gnome-tweaks (all versions)","gnome-tweaks (all versions)"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T16:17:04.610","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74859","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-74859","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529702","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74859.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74859"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74859"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-09T15:57:06.754426Z"},"epss":0.00173,"epssPercentile":0.05841,"ingestedAt":"2026-09-08T15:33:26.983Z","slug":"CVE-2026-74859","body":"## Overview\n\nThe shell theme installer in gnome-tweaks extracts user-supplied ZIP archives without validating archive member paths. As a result, a crafted theme archive can write files outside ~/.themes by using ../ path traversal, absolute paths, or symlink entries.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-08 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74859.json)","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":37.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}