CVE-2026-57959

MediumCVSS 5.9/10Last modified Oct 25, 2026

Description

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-367

Affected software

No affected versions have been published.

Timeline

Published: Jun 29, 2026
Last modified: Oct 25, 2026
NVD status: Deferred

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