CVE-2026-34392: CWE-552: Files or Directories Accessible to External Parties in aces Loris
LORIS, a self-hosted web application for neuroimaging research data management, contains a directory traversal vulnerability in its static file router in versions from 20. 0. 0 up to but not including 27. 0. 3, and from 28. 0. 0 up to but not including 28. 0. 1. This flaw allows attackers to access files outside the intended directories via static, css, and js endpoints.
AI Analysis
Technical Summary
CVE-2026-34392 is a directory traversal vulnerability (CWE-552) in the static file router of the aces LORIS application versions >=20.0.0 and <27.0.3, and >=28.0.0 and <28.0.1. This bug permits attackers to traverse outside the intended directory boundaries and download arbitrary files via static, css, and js endpoints. The issue is resolved in versions 27.0.3 and 28.0.1. The vulnerability has a CVSS 3.1 base score of 7.5, reflecting network attack vector, low complexity, no privileges required, no user interaction, unchanged scope, and high confidentiality impact without integrity or availability impact.
Potential Impact
An attacker can remotely download unintended files from the server hosting LORIS without authentication, potentially exposing sensitive data. The integrity and availability of the system are not affected. There are no known exploits in the wild at this time.
Mitigation Recommendations
The vulnerability is fixed in LORIS versions 27.0.3 and 28.0.1. Users should upgrade to one of these versions or later to remediate the issue. Patch status is not explicitly confirmed in the provided data; therefore, users must consult the official vendor advisory for confirmation and further guidance. No alternative mitigations or temporary fixes are indicated.
CVE-2026-34392: CWE-552: Files or Directories Accessible to External Parties in aces Loris
Description
LORIS, a self-hosted web application for neuroimaging research data management, contains a directory traversal vulnerability in its static file router in versions from 20. 0. 0 up to but not including 27. 0. 3, and from 28. 0. 0 up to but not including 28. 0. 1. This flaw allows attackers to access files outside the intended directories via static, css, and js endpoints.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34392 is a directory traversal vulnerability (CWE-552) in the static file router of the aces LORIS application versions >=20.0.0 and <27.0.3, and >=28.0.0 and <28.0.1. This bug permits attackers to traverse outside the intended directory boundaries and download arbitrary files via static, css, and js endpoints. The issue is resolved in versions 27.0.3 and 28.0.1. The vulnerability has a CVSS 3.1 base score of 7.5, reflecting network attack vector, low complexity, no privileges required, no user interaction, unchanged scope, and high confidentiality impact without integrity or availability impact.
Potential Impact
An attacker can remotely download unintended files from the server hosting LORIS without authentication, potentially exposing sensitive data. The integrity and availability of the system are not affected. There are no known exploits in the wild at this time.
Mitigation Recommendations
The vulnerability is fixed in LORIS versions 27.0.3 and 28.0.1. Users should upgrade to one of these versions or later to remediate the issue. Patch status is not explicitly confirmed in the provided data; therefore, users must consult the official vendor advisory for confirmation and further guidance. No alternative mitigations or temporary fixes are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-27T13:45:29.619Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d736fd1cc7ad14da418ad2
Added to database: 4/9/2026, 5:19:57 AM
Last enriched: 4/16/2026, 12:20:20 PM
Last updated: 5/25/2026, 2:24:11 AM
Views: 41
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