As old password can be set as new password , it is considered as password policy violation.
Pimcore is not enforcing strict password policy which allow attacker to set old password as new password
Proof of Concept
Update to version 1.2.0 or apply this patches manually https://github.com/pimcore/admin-ui-classic-bundle/commit/498ac77e54541177be27b0c710e387c47b3836ea.patch
https://huntr.com/bounties/b031199d-192a-46e5-8c02-f7284ad74021/
{
"cwe_ids": [
"CWE-287",
"CWE-620"
],
"github_reviewed": true,
"github_reviewed_at": "2023-10-31T22:23:18Z",
"nvd_published_at": "2023-10-30T11:15:39Z",
"severity": "MODERATE"
}