Roncoo-pay through commit 9428382 contains a missing authorization vulnerability in F2FPayController.orderQuery that allows unauthenticated attackers to retrieve payment records by supplying a trxNo parameter. Attackers can guess transaction numbers, a '7' prefix plus a snowflake ID, to obtain the full serialized payment record of any merchant.

A vulnerability was determined in roncoo roncoo-pay up to 9428382af21cd5568319eae7429b7e1d0332ff40. Affected is an unknown function of the file /user/info/lookupList. Executing manipulation can lead to improper authorization. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The vendor was contacted early about this disclosure but did not respond in any way.