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Vulnerability record · CVE-2026-34392 · published 8 April 2026

CVE-2026-34392: Mcgill loris vulnerability

Mcgill · Loris

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.

7.5 CVSS 3.1 High EPSS 0.42% · top 66.7% CWE-552 · CWE-552
7.5CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
24 Jul 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-26984Mcgill loris path traversal vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 1.1%8.6CVE-2026-35446Mcgill loris vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.38%7.5CVE-2026-33350Mcgill loris sql injection vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.41%6.5CVE-2026-34985Mcgill loris insecure direct object reference vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.27%6.5CVE-2026-35165Mcgill loris insecure direct object reference vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.27%6.5CVE-2026-26985Mcgill loris path traversal vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.52%6.1CVE-2026-39985Mcgill loris open redirect vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.35%5.4CVE-2026-35169Mcgill loris cross-site scripting vulnerabilityLORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging …EPSS 0.27%

Source: NIST National Vulnerability Database (record CVE-2026-34392), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.