macrozheng mall Coupon Redemption generateOrder race condition

A security vulnerability has been detected in macrozheng mall up to 1.0.3. This issue affects some unknown processing of the file /order/generateOrder of the component Coupon Redemption. Such manipulation of the argument couponId leads to race condition. The attack may be performed from remote. The attack requires a high level of complexity. The exploitability is assessed as difficult. The vendor deleted the GitHub issue for this vulnerability without any explanation.