aces Loris up to 26.0.4/27.0.1 electrophysiogy_browser path traversal

Summaryinfo

A vulnerability classified as critical has been found in aces Loris up to 26.0.4/27.0.1. The impacted element is the function electrophysiogy_browser. Performing a manipulation results in path traversal. This vulnerability is identified as CVE-2026-26985. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in aces Loris up to 26.0.4/27.0.1. This affects the function electrophysiogy_browser. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. Starting in version 24.0.0 and prior to versions 26.0.5, 27.0.2, and 28.0.0, an authenticated user with the appropriate authorization can read configuration files on the server by exploiting a path traversal vulnerability. Some of these files contain hard-coded credentials. The vulnerability allows an attacker to read configuration files containing hard-coded credentials. The attacker could then authenticate to the database or other services if those credentials are reused. The attacker must be authenticated and have the required permissions. However, the vulnerability is easy to exploit and the application source code is public. This problem is fixed in LORIS v26.0.5 and v27.0.2 and above, and v28.0.0 and above. As a workaround, the electrophysiogy_browser in LORIS can be disabled by an administrator using the module manager.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-26985 since 02/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 26.0.5 or 27.0.2 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Vendor

• aces

Name

• Loris

Version

• 26.0.0
• 26.0.1
• 26.0.2
• 26.0.3
• 26.0.4
• 27.0.0
• 27.0.1

Website

• Product: https://github.com/aces/Loris/

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