CVE-2026-54094

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

HIGH
7.5
CVSS Score
Published: June 25, 2026 at 05:37 PM UTC
Updated: June 27, 2026 at 11:42 AM UTC
1 product affected across 1 vendorFilebrowser

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.63.14
Affected range stops below 2.63.14, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22CWE-59

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