CVE-2026-35169 Details
Description
LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From to before 27.0.3 and 28.0.1, the help_editor module of LORIS did not properly sanitize some user supplied variables which could result in a reflected cross-site scripting attack if a user is tricked into following an invalid link. The same input vector could also allow an attacker to download arbitrary markdown files on an unpatched server. This vulnerability is fixed in 27.0.3 and 28.0.1.
A reflected cross-site scripting vulnerability has been identified in the help_editor module of LORIS (Longitudinal Online Research and Imaging System) versions 15.10 prior to 27.0.3 and 28.0.1. The vulnerability arises because the module did not adequately sanitize user-supplied variables, potentially allowing an attacker to execute a cross-site scripting attack by tricking a user into clicking a malicious link. Additionally, the same input vector could be exploited to download arbitrary markdown files from an unpatched server.
Users can update to LORIS versions 27.0.3 or 28.0.1 to address this vulnerability. Alternatively, the help_editor module can be disabled, although this may disrupt the inline help feature in LORIS.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/aces/Loris/security/advisories/GHSA-j2p3-58m2-v6q3 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
| CWE-552 | Files or Directories Accessible to External Parties | [email protected] |
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mcgill loris | >= 15.10, <= 27.0.2 28.0.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 21, 2026 | Initial Analysis | [email protected] |
| Apr 8, 2026 | New CVE Received | [email protected] |