CVE-2026-39985

MEDIUM EPSS 10.4%
Published Apr 9, 20262mo ago · Modified Jun 17, 20261w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Apr 9, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. Prior to 27.0.3 and 28.0.1, the redirect parameter upon login to LORIS was not validating the value of the redirect as being within LORIS, which could be used to trick users into visiting arbitrary URLs if they are given a link with a third party redirect parameter. This vulnerability is fixed in 27.0.3 and 28.0.1.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
10.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-601

Affected Products 2

VendorProductVersionRange
mcgillloris* <27.0.3
mcgillloris28.0.0any

References 4

  • github.com https://github.com/aces/Loris/commit/f57f54b42a076bf53ba86e20d4dbf37f63538f58
    Patch
  • github.com https://github.com/aces/Loris/releases/tag/v27.0.3
    Release Notes
  • github.com https://github.com/aces/Loris/releases/tag/v28.0.1
    Release Notes
  • github.com https://github.com/aces/Loris/security/advisories/GHSA-rch2-f5fw-cg95
    Vendor Advisory

Remediation

  • github.com https://github.com/aces/Loris/commit/f57f54b42a076bf53ba86e20d4dbf37f63538f58
    Patch