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TI-2026-27577 Aliases CVE-2026-35446

LORIS has a path traversal in FilesDownloadHandler

Priority LOW 37CWE-552Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-552.

Summary

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 24.0.0 to before 27.0.3 and 28.0.1, an incorrect order of operations in the FilesDownloadHandler could result in an attacker escaping the intended download directories. 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 0.00235 14th 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
acesLoris24.0.0 to before 27.0.3; 28.0.0 to before 28.0.127.0.3, 28.0.1Patch availableCNA
  • Loris Vendoraces Affected 24.0.0 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:*:*:*:*:*:*:*:*24.0.0 – 27.0.2Vulnerableaces
cpe:2.3:a:mcgill:loris:28.0.0:*:*:*:*:*:*:*28.0.0Vulnerableaces
  • cpe:2.3:a:mcgill:loris:*:*:*:*:*:*:*:* Versions 24.0.0 – 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-2026-35446

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-2026-21464 LORIS vulnerable to path traversal in electrophysiology_browser CVSS 3.1HIGH 8.1
  • TI-2026-27539 LORIS has potential cross-site scripting in survey_accounts module CVSS 3.1MEDIUM 6.5
See all 10 →

Sources

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