{"id":"CVE-2026-62843","summary":"File Browser: Archive builder turns backslash filenames into path traversal (zip-slip)","details":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.63.6 to 2.63.16, File Browser's archive builder uses strings.ReplaceAll(nameInArchive, \"\\\", \"/\"), which turns a POSIX filename such as ..\\..\\evil.sh into the archive entry ../../evil.sh, allowing a user with upload permission to plant a backslash-named file that escapes the extraction directory when another user downloads and extracts the generated zip or tar archive. This issue is fixed in version 2.63.17.","aliases":["GHSA-83xp-526h-j3ww","GO-2026-6026"],"modified":"2026-08-07T11:48:55.394663191Z","published":"2026-07-15T15:42:19.122Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-22","CWE-23"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62843.json"},"references":[{"type":"WEB","url":"https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62843.json"},{"type":"ADVISORY","url":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-83xp-526h-j3ww"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62843"},{"type":"FIX","url":"https://github.com/filebrowser/filebrowser/commit/8503ba61ff51d48a7313896483d130eb6a5abfe0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/filebrowser/filebrowser","events":[{"introduced":"85b7d2762dda67b6158220991654c65b43739005"},{"fixed":"8503ba61ff51d48a7313896483d130eb6a5abfe0"},{"fixed":"d76b7d161099853f17e71b1327ce4545a30c27a2"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"2.63.6"},{"fixed":"2.63.17"}]}}],"versions":["v2.63.16","v2.63.15","v2.63.14","v2.63.13","v2.63.12","v2.63.11","v2.63.10","v2.63.9","v2.63.8","v2.63.7","v2.63.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62843.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N"}]}