Access Control Flaw in LORIS Backend Affects Neuroimaging Data Management
CVE-2026-55146

4.3MEDIUM

Key Information:

Vendor

Aces

Status
Vendor
CVE Published:
30 October 2026

What is CVE-2026-55146?

LORIS, a self-hosted web application for neuroimaging research, faces an access control issue in certain versions where the backend does not properly verify user edit permissions. Although the frontend restricts editing capabilities, authenticated users may exploit this flaw to submit backend changes beyond their authorized scope. To enhance security, it is recommended that users disable the 'Issue Tracker' module if not in use. This vulnerability is resolved in LORIS versions 27.0.4 and 28.0.2.

Affected Version(s)

Loris >= 16.0.0, < 27.0.4 < 16.0.0, 27.0.4

Loris >= 28.0.0, < 28.0.2 < 28.0.0, 28.0.2

References

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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