A lxml security update has been released for Debian GNU/Linux 9 LTS to address a XSS injection vulnerability.

DLA 2467-1: lxml security update

- -------------------------------------------------------------------------
Debian LTS Advisory DLA-2467-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Abhijith PA
November 26, 2020   https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : lxml
Version : 3.7.1-1+deb9u1
CVE ID : CVE-2018-19787 CVE-2020-27783

CVE-2018-19787

It was discovered that there was a XSS injection vulnerability in
the LXML HTML/XSS manipulation library for Python.

CVE-2020-27783

javascript escaping through the and combinations.

For Debian 9 stretch, these problems have been fixed in version
3.7.1-1+deb9u1.

We recommend that you upgrade your lxml packages.

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

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