CVE-2026-72835

Summary

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 Software

VendorProductVersion RangeStatus
filebrowserfilebrowser0 < 2.63.21affected
filebrowserfilebrowser2.63.21unaffected

Weaknesses

  • CWE-41: Improper Resolution of Path Equivalence

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

Additional References

References