The Gnumeric spreadsheet contains a number of "plugins". Some of
these plugins allow users to define functions in Perl, Python and
Guile and export those to the Gnumeric engine.
The Guile plugin was exporting a dangerous function that allowed any
user to execute arbitrary scheme code. Which means that a gnumeric
spredsheet file might have contained malicious code and it would have
been executed when Gnumeric evaluates the contents of the cell.
To fix this you can either:
1. Upgrade your Gnumeric to a new version of it.
2. You can remove the libgnumguile plugin from the system.
best wishes,
Miguel
