CVE-2026-55147

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 22.0.0 prior to 27.0.4 and from 28.0.0 prior to 28.0.2, the `API` for the `imaging_browser` module permits edits to imaging data without checking the frontend permissions that restrict editing in Imaging Browser. An authenticated `API` caller can therefore modify imaging data without the required edit authorization. Deployments that no longer use the `API` can disable it to remove access to this endpoint. This issue is fixed in versions 27.0.4 and 28.0.2.

• CWE-862

• https://github.com/aces/Loris/commit/b13053597530ee33fbced35085d2490bc9ccc03a
• https://github.com/aces/Loris/pull/10531
• https://github.com/aces/Loris/releases/tag/v27.0.4
• https://github.com/aces/Loris/releases/tag/v28.0.2
• https://github.com/aces/Loris/security/advisories/GHSA-m48r-jv24-jjcx

Published

Oct 30, 2026

Last Modified

Nov 2, 2026

Status

Deferred

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