CVE-2026-55146 Details
Description
LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. In versions from 16.0.0 prior to 27.0.4 and from 28.0.0 prior to 28.0.2, the `issue_tracker` backend does not correctly verify edit access permissions, although the frontend restricts which issues a user may edit. An authenticated user can submit backend changes to issues outside the user's permitted edit scope. Deployments that no longer use Issue Tracker can disable the module to remove access to the endpoint. This issue is fixed in versions 27.0.4 and 28.0.2.
A vulnerability exists in the LORIS (Longitudinal Online Research and Imaging System) web application, specifically within the issue_tracker module. This vulnerability affects versions 16.0.0 prior to 27.0.4 and 28.0.0 prior to 28.0.2. The issue arises because the backend of the issue_tracker module does not properly verify edit access permissions. While the frontend restricts which issues a user can edit, the backend allows authenticated users to make changes to issues beyond their authorized edit scope. This vulnerability can be exploited by authenticated users to manipulate issue data improperly. Deployments that no longer use the Issue Tracker module can disable it to remove access to the vulnerable endpoint.
Users can upgrade to LORIS versions 27.0.4 or 28.0.2, both of which include the necessary permission checks. For projects that no longer use the Issue Tracker module, the module can be disabled to remove access to the vulnerable endpoint.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 30, 2026CISA-ADP
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/aces/Loris/commit/1856d1b4d48d4412d5a5a845024adb70858ec20d | [email protected] | Source CodeVendor |
| https://github.com/aces/Loris/pull/10531 | [email protected] | Issue TrackingVendor |
| https://github.com/aces/Loris/releases/tag/v27.0.4 | [email protected] | Release NotesVendor |
| https://github.com/aces/Loris/releases/tag/v28.0.2 | [email protected] | Release NotesVendor |
| https://github.com/aces/Loris/security/advisories/GHSA-c9q6-5f24-p7mj | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| aces LORIS | >= 16.0.0, <= 28.0.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | CVE Modified | CISA-ADP |
| Oct 30, 2026 | New CVE Received | [email protected] |