#987189 geany-plugin-markdown: Connects to the net to render images

Package:
geany-plugin-markdown
Source:
geany-plugins
Description:
markdown plugin for Geany
Submitter:
Christoph Biedl
Date:
2021-04-19 17:45:05 UTC
Severity:
important
#987189#5
Date:
2021-04-19 11:50:28 UTC
From:
To:
Dear maintainer,

when rendering external references, see example below, the markdown
plugin happily connects to the network to fetch that ressource. I
consider this a privacy issue, also that might result in different
appearence in different places, and if things go horribly wrong, remote
code execution via malicious content.

How to repeat:

Enter the following text in a document named .md:

    ![debian](https://www.debian.org/Pics/debian-logo-1024x576.png)

Check the "Markdown Preview"

Expected: A placeholder, possibly a warning about external references
and an option to resolve them. Possibly somewhat like the Thunderbird
mail client does.

Got: The Debian logo as received from that website.

There should be a configuration item that controls the behaviour of
fetching external content. If it already exists, it is well hidden. And
the default should be to *not* fetch data.

Regards,

    Christoph