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OpenAdvisories
Medium · 6.3 CVE-2026-55668 EUVD-2026-42272GHSA-8wc8-hf36-mjh9GO-2026-6020

File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope

Published Jul 8, 2026 · Updated Jul 8, 2026 · Assigned by GitHub_M

Description

File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.

Affected products

VendorProductAffectedFixed
filebrowser filebrowser < 2.63.16 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/filebrowser/filebrowser all versions — GO-2026-6020
Go github.com/filebrowser/filebrowser/v2 < 2.63.16 2.63.16 GHSA-8wc8-hf36-mjh9

Advisories 1

References