Patch "unserialize untrusted data" rebased onto latest release without JSON changes#2

Open

tribut wants to merge 4 commits intorelease-6.2.27from

release-unserialize-untrusted-data-nojson

Commits on Feb 25, 2022

Allow only trusted classes in unserialize

xgin
authored and
tribut
committed

Commits on Mar 3, 2022

Commits on Mar 4, 2022

Add missing IMP_Flag_System_ flags to allowlist
tribut
committed