medium5.9
CVE-2026-57959
Hi.Events through 1.9.0 contains a promo code validation vulnerability where reservation validates usage count before asynchronous UpdateEventStatisticsJob inc…
Impact
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 same restricted promo code, each reading order_usage_count=0 and passing validation, then complete them all at discounted prices without concurrent requests.
Affected products
| Product | Affected versions |
|---|---|
| Hi.Events | through 1.9.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.