CVE-2026-54096

File Browser: Improper Access Control Occurs via Pre-Created Public Share for a Non-existent Path

HIGH
8.4
CVSS Score
Published: June 25, 2026 at 05:35 PM UTC
Updated: June 27, 2026 at 11:42 AM UTC
1 product affected across 1 vendorFilebrowser

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Severity
HIGH8.4
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.7, `POST /api/share/<path>` accepts an authenticated request for an arbitrary path and stores a public share record without checking whether the target file currently exists. Later, when a file is created at that same path, the previously created public share immediately becomes valid and exposes the new file through `GET /api/public/dl/<hash>`. This vulnerability is fixed in 2.63.7.

Affected

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

v < 2.63.7
Affected range stops below 2.63.7, 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

SSVCPoCNot automatableTotal impact

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

CVSS

8.4HIGHGitHub_M
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

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