{"id":"CVE-2026-57960","title":"Hi.Events 1.9.0 - Unauthenticated Attendee PII Exposure via Check-in List short_id","summary":"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_…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","cvssSource":"cna","cwe":["CWE-359"],"vendor":"HiEventsDev","product":"Hi.Events","affected":["Hi.Events <= 1.9.0"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-30T14:35:31.080236Z"},"exploitAvailable":true,"published":"2026-06-29","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:06:42.540Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57960","references":[{"url":"https://github.com/HiEventsDev/Hi.Events/issues/1224","label":"Researcher Disclosure"},{"url":"https://github.com/HiEventsDev/Hi.Events/pull/1229","label":"Pull Request"},{"url":"https://www.vulncheck.com/advisories/hi-events-unauthenticated-attendee-pii-exposure-via-check-in-list-short-id"}],"tags":["cve.org","exploit-available"],"epss":0.00419,"epssPercentile":0.36498,"ingestedAt":"2026-11-08T14:51:22.313Z","slug":"CVE-2026-57960","body":"## Overview\n\nHi.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.\n\n## Affected\n\n- `Hi.Events <= 1.9.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}