Vulnerability details
CVE-2026-57960
HiEventsDev Hi.Events
Hi.Events 1.9.0 - Unauthenticated Attendee PII Exposure via Check-in List short_id
CVSS 4.0
8.3High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.3High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 6.5Medium | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| HiEventsDev | Hi.Events | v ≤ 1.9.0 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/HiEventsDev/Hi.Events/pull/1229 issue-trackingpatch
- https://www.vulncheck.com/advisories/hi-events-unauthenticated-attendee-pii-exposure-via-check-in-list-short-id third-party-advisory
- https://github.com/HiEventsDev/Hi.Events/issues/1224 issue-tracking
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Details
- Published
- 2026-06-29
- Last updated
- 2026-11-08
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.41%
Probability of exploitation in 30 days
36.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-359Exposure of Private Personal Information to an Unauthorized Actor