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

DSA 4916-1: prosody security update

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Debian Security Advisory DSA-4916-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
May 17, 2021   https://www.debian.org/security/faq
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Package : prosody
CVE ID : CVE-2021-32917 CVE-2021-32918 CVE-2021-32919 CVE-2021-32920
CVE-2021-32921

Multiple security issues were found in Prosody, a lightweight Jabber/XMPP
server, which could result in denial of service or information disclosure.

For the stable distribution (buster), these problems have been fixed in
version 0.11.2-1+deb10u1.

We recommend that you upgrade your prosody packages.

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

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/