[tech] Agate server: path traversal error security advisory

Hi everyone,

there is a security vulnerability in all Agate versions prior to 3.1.0, 
which has been discovered by Matthew Ingwersen.

It has been fixed in the new version which is available on crates.io, 
prebuilt binaries are also available: 
<https://qwertqwefsday.eu/agate/v3.1.0/> or 
<https://github.com/mbrubeck/agate/releases/tag/v3.1.0>

Percent-encoded slashes were misunderstood, possibly allowing arbitrary 
files to be accessed. This can be an issue depending on with which 
permissions and/or user you are running the server. Therefore an update is 
highly recommended.

Regards,
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Johann Galle
2021-06-08T09:20+02:00
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