CVE-2026-111607: Jeepay through 3.2.9 IDOR via POST /api/mch/payConfigs

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-16 · updated 2026-10-16
Weakness: CWE-639

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.

Affected products

jeequan jeepay: through 3.2.9

References

https://github.com/jeequan/jeepay/blob/V3.2.9/jeepay-merchant/src/main/java/com/jeequan/jeepay/mch/ctrl/merchant/MchPayInterfaceConfigController.java#L146-L186
https://hackmd.io/@hieuPenguinnn/jeepay-mch-payconfig-write-and-division-receiver-delete-cross-merchant-authz
https://www.vulncheck.com/advisories/jeepay-through-3.2.9-idor-via-post-api-mch-payconfigs
https://hackmd.io/@hieuPenguinnn/jeepay-mch-payconfig-write-and-division-receiver-delete-cross-merchant-authz

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