TI-2026-39025 Aliases CVE-2026-54097 GHSA-5ww9-jg6q-38r7

File Browser: Cross-user unauthorized share-link deletion via unbounded prefix match in DeleteWithPathPrefix

LOW 32CWE-639Published 2026-06-25 · Updated 2026-06-26

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, a low-privileged authenticated user of filebrowser (with create + delete permissions in their own isolated scope) can silently destroy share-link records belonging to any other user — including the administrator — by performing a legitimate DELETE on a file in their own directory whose logical path happens to be a byte-prefix of another user's stored share.Link.Path. The file contents of the victim are not exposed, but the victim's share links are irrevocably wiped. This vulnerability is fixed in 2.63.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0045 39th percentileScored 2026-11-07

Fix Fixed filebrowser (filebrowser): 2.63.6github.com/filebrowser/filebrowser/v2 (Go): 2.63.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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 2.63.6	2.63.6	Patch available	CNA
—	github.com/filebrowser/filebrowser (Go)	up to 1.11.0	—	No fix listed	GHSA-5ww9-jg6q-38r7
—	github.com/filebrowser/filebrowser/v2 (Go)	before 2.63.6	2.63.6	Patch available	GHSA-5ww9-jg6q-38r7

filebrowser Vendorfilebrowser Affected before 2.63.6 Fixed in 2.63.6 Patch available CNA
github.com/filebrowser/filebrowser (Go) Vendor— Affected up to 1.11.0 Fixed in — No fix listed GHSA-5ww9-jg6q-38r7
github.com/filebrowser/filebrowser/v2 (Go) Vendor— Affected before 2.63.6 Fixed in 2.63.6 Patch available GHSA-5ww9-jg6q-38r7

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 2.63.6
Fix · GHSA-5ww9-jg6q-38r7 github.com/filebrowser/filebrowser/v2 (Go) Fixed in 2.63.6 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-54097
2026-10-03 Alias added: GHSA-5ww9-jg6q-38r7

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-54097

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