A spip security update has been released for Debian GNU/Linux 10 to address an issue that allow authenticated users to execute arbitrary code.

DSA 4798-1: spip security update

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Debian Security Advisory DSA-4798-1 security@debian.org
  https://www.debian.org/security/ Sebastien Delafond
November 25, 2020   https://www.debian.org/security/faq
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Package : spip
CVE ID : CVE-2020-28984

It was discovered that SPIP, a website engine for publishing, did not
correctly validate its input. This would allow authenticated users to
execute arbitrary code.

For the stable distribution (buster), this problem has been fixed in
version 3.2.4-1+deb10u3.

We recommend that you upgrade your spip packages.

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

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/