{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.63.17"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "883a36f02fcb69566a8628cb47f18fdc73348387"
            },
            {
              "fixed": "d76b7d161099853f17e71b1327ce4545a30c27a2"
            }
          ],
          "repo": "https://github.com/filebrowser/filebrowser",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-7rc3-g7h6-22m7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-647",
      "CWE-706"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62685.json"
  },
  "details": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user's files. This issue is fixed in version 2.63.17.",
  "id": "CVE-2026-62685",
  "modified": "2026-07-17T03:42:03.598190261Z",
  "published": "2026-07-15T15:47:23.539Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62685.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7rc3-g7h6-22m7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-62685"
    },
    {
      "type": "FIX",
      "url": "https://github.com/filebrowser/filebrowser/commit/883a36f02fcb69566a8628cb47f18fdc73348387"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "File Browser: Colliding username normalization gives two users the same home directory"
}