CVE-2026-57959
Last modified
CVE-2026-57959 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
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/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| HiEventsDev | Hi.Events | <= 1.9.0 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-57959?
How severe is CVE-2026-57959?
How do I fix CVE-2026-57959?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-57953Mythic before 3.4.0.60 contains an authorization bypass vuln…5.4
- CVE-2026-57954Elide through 7.1.17 fails to enforce @ReadPermission on cli…5.3
- CVE-2026-57955SigNoz through 0.130.1 contains a SQL injection vulnerabilit…8.5
- CVE-2026-57956SigNoz before 0.133.0 contains a broken access control vulne…6.4
- CVE-2026-57957Papermark through 0.22.0 contains a cross-origin resource sh…4.7
- CVE-2026-57958Mixpost through 2.6.0 contains a reflected cross-site script…6.1
- CVE-2026-5796GitLab has remediated an issue in GitLab CE/EE affecting all…4.3
- CVE-2026-57960Hi.Events through 1.9.0 public check-in list endpoints use s…8.3
- CVE-2026-57961phpMyFAQ before 4.1.5 contains a potential authenticated pat…5.1
- CVE-2026-57962A malicious LDAP server, which a Thunderbird user is configu…5.3
- CVE-2026-57963An attacker who can send HTML chat messages (via Matrix or X…6.5
- CVE-2026-57965A flaw was found in spice-vdagent. A malicious or compromise…5.1
Are you affected by CVE-2026-57959?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST