CVE-2026-72836

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Source
https://cve.org/CVERecord?id=CVE-2026-72836
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72836.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-72836
Aliases
  • GHSA-576v-w77m-gr84
Published
2026-08-14T11:35:41.491Z
Modified
2026-08-18T12:58:02.698886077Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
FileBrowser before 2.63.19 Case Sensitivity Authentication Bypass
Details

FileBrowser before 2.63.19 does not account for case-insensitive filesystems when checking home directory ownership during self-registration. When Signup and CreateUserDir are enabled and FileBrowser's root is on a case-insensitive filesystem (confirmed on Windows/NTFS), two self-registered usernames that differ only in letter case (e.g., CaseVictim and casevictim) are stored as distinct accounts but resolve to the same physical home directory, because the scope-ownership check compares the persisted scope as an exact case-sensitive string. A second registrant can therefore read, overwrite, and delete another account's files through authenticated HTTP endpoints, without needing an existing account or victim interaction.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-178"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72836.json"
}
References

Affected packages

Git / github.com/filebrowser/filebrowser

Affected ranges

Type
GIT
Repo
https://github.com/filebrowser/filebrowser
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
328f629181888760f3c8b3ff9f3b5bec50f4e54f
Fixed
fe7efb2e6afe66774cd86a5b0a03033bd514d0c0
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.63.19"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.1.0
v1.1.1
v1.10.0
v1.11.0
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v1.2.7
v1.2.8
v1.2.9
v1.3.0
v1.3.1
v1.3.10
v1.3.11
v1.3.12
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.7
v1.3.8
v1.3.9
v1.4.0
v1.4.3
v1.4.4
v1.4.5
v1.4.6
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.6.0
v1.7.0
v1.7.1
v1.8.0
v1.9.0
v2.*
v2.0.0
v2.0.0-rc.1
v2.0.0-rc.2
v2.0.1
v2.0.10
v2.0.11
v2.0.12
v2.0.13
v2.0.14
v2.0.15
v2.0.16
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v2.1.0
v2.1.1
v2.1.2
v2.10.0
v2.11.0
v2.12.0
v2.12.1
v2.13.0
v2.14.0
v2.14.1
v2.15.0
v2.16.0
v2.16.1
v2.17.0
v2.17.1
v2.17.2
v2.18.0
v2.19.0
v2.2.0
v2.20.0
v2.20.1
v2.21.0
v2.21.1
v2.22.0
v2.22.1
v2.22.2
v2.22.3
v2.22.4
v2.23.0
v2.24.0
v2.24.1
v2.24.2
v2.25.0
v2.26.0
v2.27.0
v2.28.0
v2.29.0
v2.3.0
v2.30.0
v2.31.0
v2.31.1
v2.31.2
v2.32.0
v2.32.1
v2.32.2
v2.32.3
v2.33.0
v2.33.1
v2.33.10
v2.33.2
v2.33.3
v2.33.4
v2.33.5
v2.33.6
v2.33.7
v2.33.8
v2.33.9
v2.34.0
v2.34.1
v2.34.2
v2.35.0
v2.36.0
v2.36.1
v2.36.2
v2.36.3
v2.37.0
v2.38.0
v2.39.0
v2.4.0
v2.40.0
v2.40.1
v2.40.2
v2.41.0
v2.42.0
v2.42.1
v2.42.2
v2.42.3
v2.42.4
v2.42.5
v2.43.0
v2.44.0
v2.44.1
v2.44.2
v2.45.0
v2.45.1
v2.45.2
v2.45.3
v2.46.0
v2.46.1
v2.47.0
v2.48.0
v2.48.1
v2.48.2
v2.49.0
v2.5.0
v2.50.0
v2.51.0
v2.51.1
v2.51.2
v2.52.0
v2.53.0
v2.53.1
v2.54.0
v2.55.0
v2.56.0
v2.57.0
v2.57.1
v2.58.0
v2.59.0
v2.6.0
v2.6.1
v2.6.2
v2.60.0
v2.61.0
v2.61.1
v2.61.2
v2.62.0
v2.62.1
v2.62.2
v2.63.0
v2.63.1
v2.63.10
v2.63.11
v2.63.12
v2.63.13
v2.63.14
v2.63.15
v2.63.16
v2.63.17
v2.63.18
v2.63.3
v2.63.4
v2.63.5
v2.63.6
v2.63.7
v2.63.8
v2.63.9
v2.7.0
v2.8.0
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72836.json"