CVE-2026-62843 Details
Description
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.
A path traversal vulnerability has been identified in File Browser versions 2.63.6 prior to 2.63.17. The issue arises in the archive builder, which incorrectly processes backslash-containing filenames. This flaw allows users with upload permissions to create files that escape the intended extraction directory when the archive is downloaded and extracted. The vulnerability, known as 'zip-slip', can lead to overwriting important files or executing unintended scripts on the victim's system.
Users can update to File Browser version 2.63.17 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 15, 2026CISA-ADP
Assessed Jul 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-83xp-526h-j3ww | CISA-ADP | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://github.com/filebrowser/filebrowser/commit/8503ba61ff51d48a7313896483d130eb6a5abfe0 | [email protected] | Source CodeVendor |
| https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17 | [email protected] | Release NotesVendor |
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-83xp-526h-j3ww | [email protected] | AdvisoryExploitRemedyTechnical AnalysisVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
| CWE-23 | Relative Path Traversal | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| File Browser | >= 2.63.6, <= 2.63.16 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | CISA-ADP |
| Jul 15, 2026 | New CVE Received | [email protected] |