CVE-2026-66091

CVE-2026-66091 · Unauthenticated IDOR Enables Disclosure of Other Users’ last-known details

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In openEQUELLA before 2026.1, the GET /api/userquery/userinfobackup endpoint performs no authentication or authorisation check. An unauthenticated attacker who supplies another user's uniqueId can retrieve that user's stored personal details (username, first name, last name and email address) within the same institution.

CVSS 6.9 · Medium · EPSS 0.4% · Fix available

Published

2026-10-29T01:38:24.876Z

Updated

2026-10-29T02:02:13.127Z

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