{"id":"JLSEC-2026-1169","summary":"7-Zip for Windows fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive","details":"7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5 STM record named ':Zone.Identifier:$DATA' is not matched and NTFS canonicalizes it to the same stream, overwriting the propagated Internet-zone marker with ZoneId=0. A second STM record named '::$DATA' overwrites the extracted file's default data stream, letting an attacker defeat SmartScreen/MotW warnings and spoof file content.","modified":"2026-08-05T21:28:37.956993520Z","published":"2026-08-05T21:11:23.872Z","upstream":["CVE-2026-58052","EUVD-2026-39972","GHSA-fx33-p83c-vpr5"],"database_specific":{"license":"CC-BY-4.0","sources":[{"id":"CVE-2026-58052","imported":"2026-08-05T20:35:31.507Z","modified":"2026-07-14T21:17:06.020Z","published":"2026-06-28T02:16:32.283Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-58052","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58052","database_specific":{"status":"Modified"}},{"url":"https://api.github.com/advisories/GHSA-fx33-p83c-vpr5","html_url":"https://github.com/advisories/GHSA-fx33-p83c-vpr5","id":"GHSA-fx33-p83c-vpr5","imported":"2026-08-05T20:35:29.104Z","modified":"2026-06-28T03:33:40Z","published":"2026-06-28T03:33:40Z"},{"id":"EUVD-2026-39972","imported":"2026-08-05T20:35:26.180Z","modified":"2026-07-14T20:48:24Z","published":"2026-06-28T01:32:54Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-39972","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-39972"}]},"references":[{"type":"WEB","url":"https://github.com/advisories/GHSA-fx33-p83c-vpr5"},{"type":"WEB","url":"https://github.com/bikini/exploitarium/tree/main/7zip-rar5-motw-chain-poc"},{"type":"WEB","url":"https://github.com/ip7z/7zip"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58052"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/7-zip-mark-of-the-web-bypass-via-rar5-alternate-data-stream-name-collision"}],"affected":[{"package":{"name":"p7zip_jll","ecosystem":"Julia","purl":"pkg:julia/p7zip_jll?uuid=3f19e933-33d8-53b3-aaab-bd5110c3b7a0"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1169.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/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"}]}