fix(server): prevent another possible (but unreproduced) directory traversal attack

[from-the-river-to-the-sea]

No description provided.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (5616ae5) 70.29% compared to head (9a0b028) 70.29%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #643   +/-   ##
=======================================
  Coverage   70.29%   70.29%           
=======================================
  Files          33       33           
  Lines        1370     1370           
  Branches      288      288           
=======================================
  Hits          963      963           
  Misses        341      341           
  Partials       66       66           

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