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CVE-2026-90930

File Browser through 2.63.23 Path Traversal via Symlink Alias

CVSS 4.0 7.6 HIGHCVSS 3.1 6.8 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90930

Published

File Browser through 2.63.23 applies path rules to the requested lexical path but resolves symbolic links without reapplying rules to the target, allowing authenticated users to bypass deny rules. Attackers can read and overwrite rule-denied files by accessing them through in-scope symbolic link aliases that resolve to denied paths.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90930

Published

filebrowser

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "filebrowser",
                    "product": "filebrowser",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/filebrowser/filebrowser/v2",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "2.63.23"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON