LORIS has an open redirect field on login

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Summary

CVECVE-2026-39985
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-09 18:17:02 UTC
Updated2026-04-09 18:17:02 UTC
DescriptionLORIS (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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Problem Types: CWE-601 | CWE-601 CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Aces Loris affected < 27.0.3 Not specified
CNA Aces Loris affected >= 28.0.0, < 28.0.1 Not specified

References

ReferenceSourceLinkTags
github.com/aces/Loris/commit/f57f54b42a076bf53ba86e20d4dbf37f63538f58 [email protected] github.com
github.com/aces/Loris/releases/tag/v27.0.3 [email protected] github.com
github.com/aces/Loris/releases/tag/v28.0.1 [email protected] github.com
github.com/aces/Loris/security/advisories/GHSA-rch2-f5fw-cg95 [email protected] github.com
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