Mall4cloud through 4.0 IDOR Exposing Buyer Addresses via order_addr Endpoint

Advisories

Mall4cloud through 4.0 IDOR Exposing Buyer Addresses via order_addr Endpoint

Severity: high
Date: 10/16/2026
Affecting: mall4cloud <= 4.0
CVE: CVE-2026-111615
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 7.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References: https://hackmd.io/@hieuPenguinnn/mall4cloud-multishop-order-addr-cross-shop-idor
https://github.com/gz-yami/mall4cloud/blob/v4.0/mall4cloud-order/src/main/java/com/mall4j/cloud/order/controller/multishop/OrderController.java#L75-L80
https://github.com/gz-yami/mall4cloud/blob/v4.0/mall4cloud-order/src/main/resources/mapper/OrderAddrMapper.xml#L27-L29
Credit: hieuPenguinnn
Description: Mall4cloud through 4.0 contains an insecure direct object reference vulnerability that allows authenticated merchants to read other shops' buyer shipping addresses via the multishop OrderController getOrderAddr handler. Attackers can enumerate auto-increment orderAddrId values in GET /m/order/order_addr/{orderAddrId} requests to obtain consignee names, mobile numbers, addresses and post codes platform-wide.

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