A squid security update has been released for Debian GNU/Linux 10 to address two security issues, which could result in cache poisoning, request smuggling and incomplete validation of hostnames in cachemgr.cgi.

DSA 4732-1: squid security update

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Debian Security Advisory DSA-4732-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
July 21, 2020   https://www.debian.org/security/faq
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Package : squid
CVE ID : CVE-2019-18860 CVE-2020-1504

Two security issues were discovered in the Squid proxy caching
server, which could result in cache poisoning, request smuggling
and incomplete validation of hostnames in cachemgr.cgi.

For the stable distribution (buster), these problems have been fixed in
version 4.6-1+deb10u3.

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/