CVE-2026-57959 Hi.Events 1.9.0 - Promo Code Max-Usage Bypass via Asynchronous Job Race Condition

Hi.Events through 1.9.0 contains a promo code validation vulnerability where reservation validates usage count before asynchronous UpdateEventStatisticsJob increments it, allowing attackers to redeem limited promo codes unlimited times. Attackers can sequentially reserve multiple orders with the...

CVE-2026-57959

CVE-2026-57959 affects Hi.Events up to version 1.9.0. The vulnerability arises in promo code validation where the reservation path checks the usage count before the asynchronous UpdateEventStatisticsJob increments it, enabling a race condition. Attackers can sequentially reserve multiple orders u...