[Checkmk Announce] New Checkmk stable release 2.0.0p23

Dear friends of Checkmk,
the new stable release 2.0.0p23 of Checkmk is ready for download.
This maintenance release ships with 28 changes affecting all editions of Checkmk, 2 Enterprise Edition specific changes and 0 Managed Services Edition specific changes.

Changes in all Checkmk Editions:
Checks & agents: * 13843 FIX: Active discovery check: use cached data * 13257 FIX: Avoid redundant and unwanted listing of processes in ps based checks * 13825 FIX: Fix salesforce special agent * 13996 FIX: Remove unresolved macros for additional IPs * 13821 FIX: Splunk System Message correctly reports service state * 13838 FIX: TCP fetcher: don’t connect if no data is needed * 13823 FIX: The printer input check correctly handles capacity unit other * 12393 FIX: informix_{dbspaces,locks,logusage,sessions}: Add missing WATO rulesets * 13847 FIX: local: Do not crash upon invalid metric names * 13677 FIX: mk_apt: Check crashes on single-line agent sections * 13676 FIX: postgres_stat_database: Support DBs named with numbers only * 13842 FIX: ups_test: Display result of last test * 13419 FIX: cisco_cpu_multiitem: fix Werk #13413 NOTE: Please refer to the migration notes!
Core & setup: * 13725 SEC: Update openssl to 1.1.1n * 13896 SEC: Update postgres from 10.12 to 10.20 * 13898 SEC: Update stunnel to 5.63 * 13085 FIX: REST API: fix missing host/folder attributes
Notifications: * 13876 FIX: Fix encoding of $SERVICEURL$ in notifications * 13868 FIX: Fix missing graphs in notifications * 13877 FIX: Fix possible UnicodeDecodeError on notify of users via mail
Other components: * 13645 FIX: NagVis: Updated to 1.9.31
REST API: * 13937 contact/service/host group responses now contain links to entries * 13938 Requesting a non existing BI aggregation now results in a proper 404 response NOTE: Please refer to the migration notes! * 13642 FIX: REST API: Fix representation of locked_by host attribute
Setup: * 13194 Add several security HTTP headers * 13875 FIX: Fix name of time period in edit mode
User interface: * 13874 FIX: Fix ignored timerange of graphs on PDF export * 13871 FIX: Fix possibility to edit foreign visuals without permission
Changes in the Checkmk Enterprise Edition:
Core & setup: * 13906 FIX: Fix perf data not sent to Carbon if no state is selected
User interface: * 13873 FIX: Remove reports from ‘Views’ sidebar snapin
Changes in the Checkmk Managed Services Edition:

You can download Checkmk from our download page: * checkmk.com/download.php
Please mail bug reports and qualified feedback to feedback@checkmk.com. We greatly thank you for using Checkmk and wish you a successful monitoring,
Your Checkmk Team