jshERP through 3.6 is missing an authorization check on the POST /userBusiness/updateBtnStr endpoint that allows authenticated users to modify role button-permission definitions. Attackers can supply arbitrary roleId and btnStr parameters to overwrite button-permission configurations for any role in the tenant without privilege validation.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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