A privilege escalation issue in plone.app.contenttypes in Plone 4.3 through 5.2.1 allows users to PUT (overwrite) some content without needing write permission. References: https://plone.org/security/hotfix/20200121/privilege-escalation-for-overwriting-content https://plone.org/security/hotfix/20200121
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-7941