Download Directory Escape Vulnerability in LORIS by Aces
CVE-2026-35446

7.7HIGH

Key Information:

Vendor

Aces

Status
Loris
Vendor
CVE Published:
8 April 2026

What is CVE-2026-35446?

The LORIS (Longitudinal Online Research and Imaging System) web application, utilized for project management in neuroimaging research, has a vulnerability stemming from an incorrect order of operations in the FilesDownloadHandler. This flaw may allow attackers to manipulate file download paths, potentially leading to unauthorized access to files outside of the intended directories. Users of versions 24.0.0 through pre-27.0.3 and pre-28.0.1 should update promptly to the latest secure versions to mitigate these risks.

Affected Version(s)

Loris >= 24.0.0, < 27.0.3 < 24.0.0, 27.0.3

Loris >= 28.0.0, < 28.0.1 < 28.0.0, 28.0.1

References

https://github.com/aces/Loris/security/advisories/GHSA-47...
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CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.