Sanluan PublicCMS TradePaymentService.java TradePaymentService.pendingRefund authorization

A vulnerability was identified in Sanluan PublicCMS 5. This affects the function TradePaymentService.pendingRefund of the file publiccms-parent/publiccms-trade/src/main/java/com/publiccms/logic/service/trade/TradePaymentService.java. The manipulation of the argument userId leads to authorization bypass. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The web trade payment controller was removed starting with the 202608 series (commit 7329437).