FKIE_CVE-2026-44542

Vulnerability from fkie_nvd - Published: 2026-05-14 18:16 - Updated: 2026-06-17 10:50
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Summary
FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner’s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta.
References
security-advisories@github.comhttps://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673Exploit, Vendor Advisory
Impacted products
Vendor Product Version
gtsteffaniak filebrowser_quantum *
gtsteffaniak filebrowser_quantum *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "filebrowser",
          "vendor": "gtsteffaniak",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.1-stable"
            },
            {
              "status": "affected",
              "version": "\u003c 1.3.9-beta"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gtsteffaniak:filebrowser_quantum:*:-:*:*:*:*:*:*",
              "matchCriteriaId": "95D2BC81-03F2-4413-8BDD-91D0AB66FD94",
              "versionEndExcluding": "1.3.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:gtsteffaniak:filebrowser_quantum:*:beta:*:*:*:*:*:*",
              "matchCriteriaId": "6DBAB5E5-3ABA-4480-A819-E69FECB25E8F",
              "versionEndExcluding": "1.3.9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner\u2019s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta."
    }
  ],
  "id": "CVE-2026-44542",
  "lastModified": "2026-06-17T10:50:45.697",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44542",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-15T15:00:31.691150Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-14T18:16:50.157",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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