Description
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.
Published: 2026-10-29
Score: 6.9 Medium
EPSS: n/a
KEV: No
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Remediation

Vendor Solution

Update to vendor recommended versions

Tracking

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History

Thu, 29 Oct 2026 01:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Unauthenticated IDOR Enables Disclosure of Other Users’ last-known details
Weaknesses CWE-639
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: MON-CSIRT

Published:

Updated: 2026-10-29T01:38:24.876Z

Reserved: 2026-07-24T02:22:10.431Z

Link: CVE-2026-66091

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key