CVE-2026-35169

LORIS has potential cross-site scripting in help_editor module

MEDIUM
5.4
CVSS Score
Published: April 8, 2026 at 06:24 PM UTC
Updated: July 24, 2026 at 09:20 PM UTC
2 products affected across 2 vendorsLorisLoris

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

15.10 ≤ v ≤ 27.0.228.0.0
v < 27.0.3v < 28.0.1
Affected range stops below 27.0.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 28.0.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79CWE-552

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