Read the docs
TI-2026-27539 Aliases CVE-2026-35403

LORIS has potential cross-site scripting in survey_accounts module

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 15.10 to before 27.0.3 and 28.0.1, there is a potential for a cross-site scripting attack in the survey_accounts module if a user provides an invalid visit label. While the data is properly JSON encoded, the Content-Type header is not set causing the web browser to interpret the payload as HTML, opening the possibility of a cross-site scripting if a user is tricked into following an invalid link. This vulnerability is fixed in 27.0.3 and 28.0.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00173 6th percentileScored 2026-11-07
Fix Fixed Loris (aces): 27.0.3, 28.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
acesLoris15.10 to before 27.0.3; 28.0.0 to before 28.0.127.0.3, 28.0.1Patch availableCNA
  • Loris Vendoraces Affected 15.10 to before 27.0.3; 28.0.0 to before 28.0.1 Fixed in 27.0.3, 28.0.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mcgill:loris:*:*:*:*:*:*:*:*15.10 – 27.0.2Vulnerableaces
cpe:2.3:a:mcgill:loris:28.0.0:*:*:*:*:*:*:*28.0.0Vulnerableaces
  • cpe:2.3:a:mcgill:loris:*:*:*:*:*:*:*:* Versions 15.10 – 27.0.2 Vulnerable ·aces
  • cpe:2.3:a:mcgill:loris:28.0.0:*:*:*:*:*:*:* Versions 28.0.0 Vulnerable ·aces

Remediation

  • Fix · CNA Loris (aces) Fixed in 27.0.3, 28.0.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35403

References

Patch 1

  • TI-2026-21463 LORIS media module vulnerable to remote code execution CVSS 3.1HIGH 8.8
  • TI-2026-27323 LORIS has potential cross-site scripting in help_editor module CVSS 3.1HIGH 8.7
  • TI-2026-26678 LORIS has a path traversal in static router CVSS 3.1HIGH 7.5
  • TI-2026-25756 LORIS has a SQL injection in MRI feedback popup CVSS 3.1HIGH 7.5
  • TI-2026-27577 LORIS has a path traversal in FilesDownloadHandler CVSS 3.1HIGH 8.6
  • TI-2026-21464 LORIS vulnerable to path traversal in electrophysiology_browser CVSS 3.1HIGH 8.1
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences