CVE-2026-57959

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory (severity: HIGH) published 2026-06-29. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.9
EG Score
5.9(high)
EPSS
9.2%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 29, 2026

Advisory Details (2)

Auto-updated Jun 29, 2026
No patch confirmed yet.
generic

Hi.Events 1.9.0 - Promo Code Max-Usage Bypass via Asynchronous Job Race Condition | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hi-events-promo-code-max-usage-bypass-via-asynchronous-job-race-condition
generic

🐛 Promo Code Max-Usage Limit Bypass in Hi.Events (Async Counter Race Condition) · Issue #1223 · HiEventsDev/Hi.Events · GitHub

https://github.com/HiEventsDev/Hi.Events/issues/1223

Vendor Advisories for CVE-2026-57959(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 24× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 23:33 UTCEG score recompute
  2. 2026-07-06 23:33 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 22:46 UTCEG score recompute
  8. 2026-07-05 22:46 UTCGHSA enrichment
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 21:57 UTCEG score recompute
  12. 2026-07-04 21:57 UTCGHSA enrichment
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 21:11 UTCEG score recompute
  16. 2026-07-03 21:11 UTCGHSA enrichment
  17. 2026-07-02 20:23 UTCEG score recompute
  18. 2026-07-02 20:23 UTCGHSA enrichment
  19. 2026-07-01 19:37 UTCEG score recompute
  20. 2026-07-01 19:37 UTCGHSA enrichment
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 18:50 UTCEG score recompute
  24. 2026-06-30 18:50 UTCGHSA enrichment
  25. 2026-06-29 18:03 UTCEG score recompute
Show 1 more
  1. 2026-06-29 18:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-57959?
CVE-2026-57959 is a medium vulnerability published on June 29, 2026. 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…
When was CVE-2026-57959 disclosed?
CVE-2026-57959 was first published in the National Vulnerability Database on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57959 actively exploited?
CVE-2026-57959 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57959?
CVE-2026-57959 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-57959?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57959, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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