A squid security update has been released for Debian GNU/Linux 10 to address a HTTP request smuggling issue.

DSA 4873-1: squid security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4873-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
March 23, 2021   https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : squid
CVE ID : CVE-2020-25097
Debian Bug : 985068

Jianjun Chen discovered that the Squid proxy caching server was
susceptible to HTTP request smuggling.

For the stable distribution (buster), this problem has been fixed in
version 4.6-1+deb10u5.

We recommend that you upgrade your squid packages.

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

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