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OpenAdvisories
High · 8.7 CVE-2026-54090 EUVD-2026-39511GHSA-8c9q-7855-wfxqGO-2026-5250

File Browser: Command Allowlist Bypass via Shell Metacharacter Injection

Published Jun 25, 2026 · Updated Jun 26, 2026 · Assigned by GitHub_M

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.33.8, when a shell interpreter is configured (e.g. /bin/sh -c), the command allowlist can be bypassed through shell metacharacters. The allowlist validates only the first token of user input, but the entire raw string is handed to the shell — semicolons, pipes, backticks, and $() all work to chain arbitrary commands after a permitted one. This vulnerability is fixed in 2.33.8.

Affected products

VendorProductAffectedFixed
filebrowser filebrowser < 2.33.8 —

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-2026-5250
Go github.com/filebrowser/filebrowser/v2 < 2.33.8 2.33.8 GHSA-8c9q-7855-wfxq

Advisories 1

References