CVE-2026-54910

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{"affected": [{"affectedData": [{"product": "filebrowser", "vendor": "gtsteffaniak", "versions": [{"status": "affected", "version": "< 1.4.3-beta"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.4.3-beta, the `subtitlesHandler` endpoint (`GET /api/media/subtitles`) accepts two user-controlled query parameters: `path` and `name`, both of which are used in filesystem operations without sanitization, creating two independent path traversal vectors. The primary vector is the `path` parameter: it is passed directly to `idx.GetRealPath()` without calling `SanitizeUserPath()`, allowing an attacker to escape the storage root and set `parentDir` to any directory on the host. No existing anchor file is required. The secondary vector is the `name` parameter: it is joined with `parentDir` via `filepath.Join(parentDir, name)` without stripping directory components, allowing traversal relative to any resolved `parentDir`. Any authenticated user (regardless of role or permissions) can exploit either vector to read any text file readable by the server process, including `/etc/passwd`, SSH keys, database credentials, and JWT signing keys. Version 1.4.3-beta patches the issue."}, {"lang": "es", "value": "FileBrowser Quantum es un gestor de archivos gratuito, autoalojado y basado en web. Antes de la versi\u00f3n 1.4.3-beta, el endpoint \u201csubtitlesHandler\u201d (\u201cGET /api/media/subtitles\u201d) acepta dos par\u00e1metros de consulta controlados por el usuario: \u201cpath\u201d y \u201cname\u201d, ambos utilizados en operaciones del sistema de archivos sin sanitizaci\u00f3n, creando dos vectores independientes de salto de ruta. El vector principal es el par\u00e1metro \u201cpath\u201d: se pasa directamente a \u201cidx.GetRealPath()\u201d sin llamar a \u201cSanitizeUserPath()\u201d, permitiendo a un atacante escapar de la ra\u00edz de almacenamiento y establecer \u201cparentDir\u201d a cualquier directorio en el host. No se requiere ning\u00fan archivo ancla existente. El vector secundario es el par\u00e1metro \u201cname\u201d: se une con \u201cparentDir\u201d a trav\u00e9s de \u201cfilepath.Join(parentDir, name)\u201d sin eliminar componentes de directorio, permitiendo el salto de ruta relativo a cualquier \u201cparentDir\u201d resuelto. Cualquier usuario autenticado (independientemente del rol o los permisos) puede explotar cualquiera de los vectores para leer cualquier archivo de texto legible por el proceso del servidor, incluyendo \u201c/etc/p4ssd\u201d, claves SSH, credenciales de base de datos y claves de firma JWT. La versi\u00f3n 1.4.3-beta corrige el problema."}], "id": "CVE-2026-54910", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54910", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-20T14:51:53.928655Z", "version": "2.0.3"}}]}, "published": "2026-07-20T15:16:43.933", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/gtsteffaniak/filebrowser/commit/f3f4bbe80cb569d664174aea874d7bfa008c3b5a"}, {"source": "security-advisories@github.com", "url": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-vvp7-h4fj-m28w"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-vvp7-h4fj-m28w"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-23"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.4.3-beta)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "filebrowser", "source": "cna", "vendor": "gtsteffaniak"}, "product": "filebrowser", "vendor": "gtsteffaniak"}], "created": "2026-07-21T00:15:03.306785+00:00", "updated": "2026-07-30T19:30:09.706121+00:00", "vendors": ["gtsteffaniak", "gtsteffaniak$PRODUCT$filebrowser"]}