TI-2026-39024 Aliases CVE-2026-54096 GHSA-3q2p-72cj-682c

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

HIGH 72CWE-863Published 2026-06-25 · Updated 2026-06-25

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00182 7th percentileScored 2026-11-07

Fix Fixed filebrowser (filebrowser): 2.63.7github.com/filebrowser/filebrowser/v2 (Go): 2.63.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
filebrowser	filebrowser	before 2.63.7	2.63.7	Patch available	CNA
—	github.com/filebrowser/filebrowser/v2 (Go)	before 2.63.7	2.63.7	Patch available	GHSA-3q2p-72cj-682c
—	github.com/filebrowser/filebrowser (Go)	up to 1.11.0	—	No fix listed	GHSA-3q2p-72cj-682c

filebrowser Vendorfilebrowser Affected before 2.63.7 Fixed in 2.63.7 Patch available CNA
github.com/filebrowser/filebrowser/v2 (Go) Vendor— Affected before 2.63.7 Fixed in 2.63.7 Patch available GHSA-3q2p-72cj-682c
github.com/filebrowser/filebrowser (Go) Vendor— Affected up to 1.11.0 Fixed in — No fix listed GHSA-3q2p-72cj-682c

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:filebrowser:filebrowser::::::::	—	—	filebrowser

cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* Versions — — ·filebrowser

Remediation

Fix · CNA filebrowser (filebrowser) Fixed in 2.63.7
Fix · GHSA-3q2p-72cj-682c github.com/filebrowser/filebrowser/v2 (Go) Fixed in 2.63.7 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-54096
2026-10-03 Alias added: GHSA-3q2p-72cj-682c

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-54096

Other 4

TI-2026-25251 File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin CVSS 4.0CRITICAL 10.0
TI-2026-51065 filebrowser through 2.63.16 Privilege Escalation via Signup CVSS 4.0CRITICAL 9.3
TI-2026-39018 File Browser: Authentication Bypass via Proxy Auth Header Forgery CVSS 3.1CRITICAL 9.1
TI-2026-39017 File Browser: Command Injection via Authentication Hook Shell Substitution (Pre-Authentication RCE) CVSS 4.0CRITICAL 9.3
TI-2026-23305 File Browser: TUS Delete Endpoint Bypasses Delete Permission Check CVSS 3.1CRITICAL 9.1
TI-2026-26777 File Browser's Signup Grants Execution Permissions When Default Permissions Includes Execution CVSS 3.1CRITICAL 9.8

See all 64 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences