# CVE-2026-57960

## Summary

- **CVE ID:** CVE-2026-57960
- **Severity:** HIGH
- **CVSS Score:** 8.3 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-359
- **Published:** Jun 29, 2026
- **Last Modified:** Jul 14, 2026

## Description

Hi.Events through 1.9.0 public check-in list endpoints use short_id as sole access control, allowing unauthenticated access to retrieve full attendee lists including emails and personal information. Attackers with knowledge of the short_id can call GET /api/public/check-in-lists/{short_id}/attendees to read attendee data and create or delete check-in records without authentication.

## Affected Products

- HiEventsDev — Hi.Events (0)

## References

- [CNA](https://github.com/HiEventsDev/Hi.Events/issues/1224)
- [CNA](https://github.com/HiEventsDev/Hi.Events/pull/1229)
- [CNA](https://www.vulncheck.com/advisories/hi-events-unauthenticated-attendee-pii-exposure-via-check-in-list-short-id)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._