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
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Update to vendor recommended versions

Tracking

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Advisories

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History

Thu, 29 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: MON-CSIRT

Published:

Updated: 2026-10-29T02:02:13.127Z

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

Link: CVE-2026-66091

cve-icon Vulnrichment

Updated: 2026-10-29T01:53:52.155Z

cve-icon NVD

Status : Received

Published: 2026-10-29T02:16:52.933

Modified: 2026-10-29T02:16:52.933

Link: CVE-2026-66091

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T02:30:07Z

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key