Jeepay through 3.2.9 IDOR via POST /api/mch/payConfigs

Advisories

Jeepay through 3.2.9 IDOR via POST /api/mch/payConfigs

Severity: high
Date: 10/16/2026
Affecting: jeepay <= 3.2.9
CVE: CVE-2026-111607
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:N/VI:H/VA:L/SC:N/SI:N/SA:N
References: https://hackmd.io/@hieuPenguinnn/jeepay-mch-payconfig-write-and-division-receiver-delete-cross-merchant-authz
https://github.com/jeequan/jeepay/blob/V3.2.9/jeepay-merchant/src/main/java/com/jeequan/jeepay/mch/ctrl/merchant/MchPayInterfaceConfigController.java#L146-L186
Credit: hieuPenguinnn
Description: Jeepay through 3.2.9 contains an insecure direct object reference vulnerability that allows authenticated merchant users to overwrite another merchant application's payment channel configuration by supplying a victim infoId to MchPayInterfaceConfigController.saveOrUpdate. Attackers holding the default ENT_MCH_PAY_CONFIG_ADD permission can replace signing keys, certificates, and fee rates to break or redirect the victim merchant's payment processing.

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