CVE-2026-72835

filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7
https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-14 12:16

Updated : 2026-09-08 20:32

NVD link : CVE-2026-72835

Mitre link : CVE-2026-72835

CVE.ORG link : CVE-2026-72835

JSON object : View

Products Affected

No product.

CWE

CWE-41

Improper Resolution of Path Equivalence

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