A cups security update has been released for Debian GNU/Linux 10 and 11 to address a privilege escalation issue.

DSA 5149-1: cups security update

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Debian Security Advisory DSA-5149-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
May 26, 2022   https://www.debian.org/security/faq
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Package : cups
CVE ID : CVE-2022-26691

Joshua Mason discovered that a logic error in the validation of the
secret key used in the "local" authorisation mode of the CUPS printing
system may result in privilege escalation.

For the oldstable distribution (buster), this problem has been fixed
in version 2.2.10-6+deb10u6.

For the stable distribution (bullseye), this problem has been fixed in
version 2.3.3op2-3+deb11u2.

We recommend that you upgrade your cups packages.

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

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/