CVE-2026-32760

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. In versions 2.61.2 and below, any unauthenticated visitor can register a full administrator account when self-registration (signup = true) is enabled and the default user permissions have perm.admin = true. The signup handler blindly applies all default settings (including Perm.Admin) to the new user without any server-side guard that strips admin from self-registered accounts. The signupHandler is supposed to create unprivileged accounts for new visitors. It contains no explicit user.Perm.Admin = false reset after applying defaults. If an administrator (intentionally or accidentally) configures defaults.perm.admin = true and also enables signup, every account created via the public registration endpoint is an administrator with full control over all files, users, and server settings. This issue has been resolved in version 2.62.0.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/filebrowser/filebrowser/commit/a63573b67eb302167b4c4f218361a2d0c138deab	Patch
https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0	Product Release Notes
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5gg9-5g7w-hm73	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-20 00:16

Updated : 2026-03-23 16:54

NVD link : CVE-2026-32760

Mitre link : CVE-2026-32760

CVE.ORG link : CVE-2026-32760

JSON object : View

Products Affected

filebrowser

filebrowser

CWE

CWE-269

Improper Privilege Management

CWE-284

Improper Access Control

{"id": "CVE-2026-32760", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 10.0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-20T00:16:17.440", "references": [{"url": "https://github.com/filebrowser/filebrowser/commit/a63573b67eb302167b4c4f218361a2d0c138deab", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5gg9-5g7w-hm73", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-284"}]}], "descriptions": [{"lang": "en", "value": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. In versions 2.61.2 and below, any unauthenticated visitor can register a full administrator account when self-registration (signup = true) is enabled and the default user permissions have perm.admin = true. The signup handler blindly applies all default settings (including Perm.Admin) to the new user without any server-side guard that strips admin from self-registered accounts. The signupHandler is supposed to create unprivileged accounts for new visitors. It contains no explicit user.Perm.Admin = false reset after applying defaults. If an administrator (intentionally or accidentally) configures defaults.perm.admin = true and also enables signup, every account created via the public registration endpoint is an administrator with full control over all files, users, and server settings. This issue has been resolved in version 2.62.0."}, {"lang": "es", "value": "Navegador de Archivos es una interfaz de gesti\u00f3n de archivos para cargar, eliminar, previsualizar, renombrar y editar archivos dentro de un directorio especificado. En las versiones 2.61.2 e inferiores, cualquier visitante no autenticado puede registrar una cuenta de administrador completa cuando el autorregistro (signup = true) est\u00e1 habilitado y los permisos de usuario predeterminados tienen perm.admin = true. El gestor de registro aplica ciegamente todas las configuraciones predeterminadas (incluyendo Perm.Admin) al nuevo usuario sin ninguna protecci\u00f3n del lado del servidor que elimine los privilegios de administrador de las cuentas autorregistradas. Se supone que el signupHandler debe crear cuentas sin privilegios para nuevos visitantes. No contiene un restablecimiento expl\u00edcito de user.Perm.Admin = false despu\u00e9s de aplicar los valores predeterminados. Si un administrador (intencionalmente o accidentalmente) configura defaults.perm.admin = true y tambi\u00e9n habilita el registro, cada cuenta creada a trav\u00e9s del punto final de registro p\u00fablico es un administrador con control total sobre todos los archivos, usuarios y configuraciones del servidor. Este problema ha sido resuelto en la versi\u00f3n 2.62.0."}], "lastModified": "2026-03-23T16:54:48.340", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7E5C9E4B-8749-44EA-AB8D-1292D4C9DB65", "versionEndExcluding": "2.62.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}