CVE-2026-35169

LORIS has potential cross-site scripting in help_editor module

State: Published
Severity: 8.7 High
Published: Apr 8, 2026
Updated: Apr 9, 2026
Reserved: Apr 1, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-552 Files or Directories Accessible to External Parties

Affected Products

Product	Versions
Lorisaces	>= , < 27.0.3Affected >= 28.0.0, < 28.0.1Affected

References

https://github.com/aces/Loris/security/advisories/GHSA-j2p3-58m2-v6q3

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