# CVE-2026-72835

## Summary

- **CVE ID:** CVE-2026-72835
- **Severity:** HIGH
- **CVSS Score:** 7.6 (CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-41
- **Published:** Aug 14, 2026
- **Last Modified:** Aug 14, 2026

## Description

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.

## Affected Products

- filebrowser — filebrowser (0)
- filebrowser — filebrowser (2.63.21)

## References

- [CNA](https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7)
- [CNA](https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.41%
- **EPSS Percentile:** 34.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._