A highlight.js security update has been released for Debian GNU/Linux 9 LTS to address an issue that might result in strange behavior or crashes of applications that do not correctly handle unknown properties.

DLA 2511-1: highlight.js security update

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Debian LTS Advisory DLA-2511-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
December 30, 2020   https://wiki.debian.org/LTS
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Package : highlight.js
Version : 8.2+ds-5+deb9u1
CVE ID : CVE-2020-26237

An issue has been found in highlight.js, a JavaScript library for syntax
highlighting. If a website or application renders user provided data it
might be affected by a Prototype Pollution. This might result in strange
behavior or crashes of applications that do not correctly handle unknown
properties.

For Debian 9 stretch, this problem has been fixed in version
8.2+ds-5+deb9u1.

We recommend that you upgrade your highlight.js packages.

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

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