Beware of Polkit: PwnKit: Local Privilege Escalation Vulnerability Discovered in polkit’s pkexec (CVE-2021-4034) | Qualys Security Blog
UPDATE: According to Will Manjaro be affected by cve-2021-4034? - #2 by bogdancovaciu , this has been fixed for Manjaro (all branches) so there is at least no issue in Manjaro anymore.