admin/blocks.php in Subrion CMS through 4.2.1 allows PHP Object Injection (with resultant file deletion) via serialized data in the subpages value within a block to blocks/edit.
{ "versions": [ { "introduced": "0" }, { "last_affected": "4.2.1" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12469.json"