A smarty3 security update has been released for Debian GNU/Linux 9 LTS.

DLA 3033-1: smarty3 security update

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Debian LTS Advisory DLA-3033-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Markus Koschany
May 29, 2022   https://wiki.debian.org/LTS
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Package : smarty3
Version : 3.1.31+20161214.1.c7d42e4+selfpack1-2+deb9u6
CVE ID : CVE-2022-29221
Debian Bug : 1011758

Smarty3 is a template engine for PHP. It was found that template authors could
inject PHP code by choosing a malicious {block} name or {include} file name.

For Debian 9 stretch, this problem has been fixed in version
3.1.31+20161214.1.c7d42e4+selfpack1-2+deb9u6.

We recommend that you upgrade your smarty3 packages.

For the detailed security status of smarty3 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/smarty3

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