{"id":"CVE-2026-62843","aliases":["GHSA-83xp-526h-j3ww","GO-2026-6026"],"url":"https://o3.security/vulnerability/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.","published":"2026-07-15T15:42:19.122Z","modified":"2026-08-12T03:51:12.870259204Z","cvss":{"score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N"},"epss":{"score":0.00391,"percentile":0.32362,"asOf":"2026-09-07"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser/v2","fixedVersion":"2.63.17"}],"fix":{"url":"https://github.com/filebrowser/filebrowser/commit/8503ba61ff51d48a7313896483d130eb6a5abfe0","label":"filebrowser/filebrowser@8503ba6"},"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:12.870259204Z"}}