๐Ÿ” CVE Alert

CVE-2026-55146

MEDIUM 4.3

LORIS has incorrect access checks in issue_tracker

CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-862
Vendor aces
Product loris
Published Oct 30, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Affected Versions

aces / Loris
>= 16.0.0, < 27.0.4 >= 28.0.0, < 28.0.2

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
github.com: https://github.com/aces/Loris/security/advisories/GHSA-c9q6-5f24-p7mj github.com: https://github.com/aces/Loris/pull/10531 github.com: https://github.com/aces/Loris/commit/1856d1b4d48d4412d5a5a845024adb70858ec20d github.com: https://github.com/aces/Loris/releases/tag/v27.0.4 github.com: https://github.com/aces/Loris/releases/tag/v28.0.2