Vulnerability in Hieventsdev Hi.events
CVE-2026-57960
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Hieventsdev Hi.events — versions 0
Weakness classification (CWE)
References
- github.com/HiEventsDev/Hi.Events/issues/1224 (issue-tracking, technical-description)
- github.com/HiEventsDev/Hi.Events/pull/1229 (issue-tracking)
- www.vulncheck.com/advisories/hi-events-unauthenticated-attendee-pii-exposure-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-57960?
- CVE-2026-57960 is a medium-severity vulnerability in Hieventsdev Hi.events, classified under Exposure of Private Personal Information to an Unauthorized Actor. CVSS score: 6.5/10. Published 2026-06-29.
- How severe is CVE-2026-57960?
- Medium severity. CVSS v3 base score is 6.5 out of 10.