File Browser: DoS Vulnerability on Public Login API
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.
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, unchecked passwords maximums allow for an arbitrarily large password to be passed into the login API. This spikes CPU and memory, and after testing, crashes, heavily lags any container created, and has even made my docker daemon start to send errors with status code 500 even after the container was destroyed. This vulnerability is fixed in 2.63.6.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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/v2 (Go) | before 2.63.6 | 2.63.6 | Patch available | GHSA-w5fm-68j4-fpc4 |
| — | github.com/filebrowser/filebrowser (Go) | up to 1.11.0 | — | No fix listed | GHSA-w5fm-68j4-fpc4 |
- filebrowser Vendorfilebrowser Affected before 2.63.6 Fixed in 2.63.6 Patch available CNA
- github.com/filebrowser/filebrowser/v2 (Go) Vendor— Affected before 2.63.6 Fixed in 2.63.6 Patch available GHSA-w5fm-68j4-fpc4
- github.com/filebrowser/filebrowser (Go) Vendor— Affected up to 1.11.0 Fixed in — No fix listed GHSA-w5fm-68j4-fpc4
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-w5fm-68j4-fpc4 github.com/filebrowser/filebrowser/v2 (Go) Fixed in 2.63.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54092
- 2026-10-03 Alias added: GHSA-w5fm-68j4-fpc4
References
Other 5
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-w5fm-68j4-fpc4
- https://github.com/filebrowser/filebrowser/commit/847d08bdd135e5c3659f2e6dea2f0cd36617af9b
- https://github.com/filebrowser/filebrowser/releases/tag/v2.63.6
- https://github.com/filebrowser/filebrowser
- https://vincent.vulcoord.net/score/?state=Not+Scored&year=2026&year=2025&assigned_to=a165dae3-480e-4f7d-bbb8-9b1d78115b69&cve=CVE-2026-54092&analyze=1
More filebrowser vulnerabilities
- 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
Sources
- CVE-2026-54092 · CVE Program
- CVE-2026-54092 · NVD
- FIRST EPSS
- GHSA-w5fm-68j4-fpc4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences