Unvalidated Redirect Vulnerability in LORIS Web Application by ACES
CVE-2026-39985

4.3MEDIUM

Key Information:

Vendor

Aces

Status
Loris
Vendor
CVE Published:
9 April 2026

What is CVE-2026-39985?

The LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application designed for managing neuroimaging research projects. Prior to versions 27.0.3 and 28.0.1, LORIS lacked appropriate validation for the redirect parameter following user login. This oversight allowed attackers to manipulate the redirect value, potentially tricking users into navigating to malicious URLs, thereby compromising user security. This vulnerability has been addressed in the latest versions.

Affected Version(s)

Loris < 27.0.3 < 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-rc...
x_refsource_CONFIRM
https://github.com/aces/Loris/commit/f57f54b42a076bf53ba8...
x_refsource_MISC
https://github.com/aces/Loris/releases/tag/v27.0.3
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.