A drupal7 security update has been released for Debian GNU/Linux 9.

DSA 4706-1: drupal7 security update

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Debian Security Advisory DSA-4706-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
June 18, 2020   https://www.debian.org/security/faq
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Package : drupal7
CVE ID : CVE-2020-13663

It was discovered that Drupal, a fully-featured content management
framework, was suspectible to cross site request forgery.

For additional information, please refer to the upstream advisory at
  https://www.drupal.org/sa-core-2020-004

For the oldstable distribution (stretch), this problem has been fixed
in version 7.52-2+deb9u11.

We recommend that you upgrade your drupal7 packages.

For the detailed security status of drupal7 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/drupal7

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/