What’s Vulnerable › Vulnerabilities

CVE-2026-54094: File Browser: Symlink following lets scoped users read, overwrite, and share files outside their filebrowser scope

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-06-25
• Weakness: CWE-22

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.14, it does not stop the HTTP file handlers from following symbolic links before they open, serve, write, share, or list a file. As a result, a scoped user — and in some cases an unauthenticated public-share recipient — can cross the intended scope boundary by following a symlink whose path is lexically inside their scope but whose target is outside it. This vulnerability is fixed in 2.63.14.

Affected products

• filebrowser: before 2.63.14

References

• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-239w-m3h6-ch8v
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-239w-m3h6-ch8v

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