A php7.3 security update has been released for Debian GNU/Linux 10 to address multiple security issues.

DSA 4719-1: php7.3 security update

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Debian Security Advisory DSA-4719-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
July 06, 2020 https://www.debian.org/security/faq
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Package : php7.3
CVE ID : CVE-2019-11048 CVE-2020-7062 CVE-2020-7063 CVE-2020-7064
CVE-2020-7065 CVE-2020-7066 CVE-2020-7067

Multiple security issues were found in PHP, a widely-used open source
general purpose scripting language which could result in information
disclosure, denial of service or potentially the execution of arbitrary
code.

For the stable distribution (buster), these problems have been fixed in
version 7.3.19-1~deb10u1.

We recommend that you upgrade your php7.3 packages.

For the detailed security status of php7.3 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/php7.3

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/