PT-2026-52537 · Filebrowser · Filebrowser

Publicado 2026-06-25 · Atualizado 2026-06-25 · CVE-2026-54089

NVD

CVSS v3.1

9.1

Crítica

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Starting with 2.0.0-rc.1, when FileBrowser is configured with proxy authentication (auth.method=proxy), any unauthenticated attacker who can reach the server directly can impersonate any user - including admin - by sending a single forged HTTP header. No credentials are required. Additionally, specifying a non-existent username causes the server to automatically create a new user account, providing an account creation primitive with no authorization. This is an already known issue that has been documented in the documentation for several years, but has not been documented as a vulnerability before.

Exploit

Correção

Improper Authentication

Authentication Bypass by Spoofing

Enumeração de Fraquezas

CWE-287

CWE-290

Identificadores relacionados

CVE-2026-54089

Produtos afetados

Filebrowser

Referências · 4

• 🔥 https://github.com/filebrowser/filebrowser/security/advisories/GHSA-xqp3-jq6g-x3qm · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-54089 · Nota de Segurança
• https://github.com/filebrowser/filebrowser/blob/main/http/auth.go#L121-L137 · Nota
• https://github.com/filebrowser/filebrowser/blob/main/auth/proxy.go · Nota