CVE-2026-116682 (GCVE-0-2026-116682)

Vulnerability from cvelistv5 – Published: 2026-10-27 17:48 – Updated: 2026-10-27 17:48
VLAI
Title
FileBrowser Quantum: Symlink following escapes user scope allowing arbitrary file read outside the served directory
Summary
FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user's authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7812 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
gtsteffaniak filebrowser Affected: < 1.5.2-stable
Affected: >= 2.0.0-beta, < 2.0.1-beta
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "filebrowser",
          "vendor": "gtsteffaniak",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.5.2-stable"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.0.0-beta, \u003c 2.0.1-beta"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user\u0027s authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T17:48:04.364Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj",
          "tags": [
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          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj"
        },
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/pull/2795",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/pull/2795"
        },
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/pull/2800",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/pull/2800"
        },
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67"
        },
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38"
        },
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable"
        },
        {
          "name": "https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta"
        }
      ],
      "source": {
        "advisory": "GHSA-mgqf-5mf5-prfj",
        "discovery": "UNKNOWN"
      },
      "title": "FileBrowser Quantum: Symlink following escapes user scope allowing arbitrary file read outside the served directory"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-116682",
    "datePublished": "2026-10-27T17:48:04.364Z",
    "dateReserved": "2026-10-26T20:00:59.829Z",
    "dateUpdated": "2026-10-27T17:48:04.364Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "filebrowser",
                "vendor": "gtsteffaniak",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.5.2-stable"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 2.0.0-beta, \u003c 2.0.1-beta"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user\u0027s authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta."
          }
        ],
        "id": "CVE-2026-116682",
        "lastModified": "2026-10-27T18:17:36.003",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.6,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 4.0,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-27T18:17:36.003",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38"
          },
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            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/pull/2795"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/pull/2800"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
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            "description": [
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                "lang": "en",
                "value": "CWE-22"
              },
              {
                "lang": "en",
                "value": "CWE-59"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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