CVE-2026-34392

LORIS has a path traversal in static router

State: Published
Severity: 7.5 High
Published: Apr 8, 2026
Updated: Apr 9, 2026
Reserved: Mar 27, 2026

Description

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 20.0.0 to before 27.0.3 and 28.0.1, a bug in the static file router can allow an attacker to traverse outside of the intended directory, allowing unintended files to be downloaded through the static, css, and js endpoints. This vulnerability is fixed in 27.0.3 and 28.0.1.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-552 Files or Directories Accessible to External Parties

Affected Products

Product	Versions
Lorisaces	>= 20.0.0, < 27.0.3Affected >= 28.0.0, < 28.0.1Affected

References

https://github.com/aces/Loris/security/advisories/GHSA-rfj5-58hv-wc5f

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