A ruby-sinatra security update has been released for Debian GNU/Linux 10 to address a file traversal vulnerability.

DLA 3166-1: ruby-sinatra security update

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Debian LTS Advisory DLA-3166-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
October 28, 2022   https://wiki.debian.org/LTS
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Package : ruby-sinatra
Version : 2.0.5-4+deb10u1
CVE ID : CVE-2022-29970
Debian Bug : 1014717

A file traversal vulnerability was discovered in src:ruby-sinatra, a
popular web server often used with Ruby on Rails. We now validate that
any expanded paths match the allowed `public_dir` when serving static
files.

For Debian 10 buster, this problem has been fixed in version
2.0.5-4+deb10u1.

We recommend that you upgrade your ruby-sinatra packages.

For the detailed security status of ruby-sinatra please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/ruby-sinatra

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS