What is CVE-2026-26984?

CVE-2026-26984 is a high-severity vulnerability in Aces Loris, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-02-25.

How severe is CVE-2026-26984?

High severity. CVSS v3 base score is 8.7 out of 10.

Path Traversal in Aces Loris

CVE-2026-26984

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. Prior to versions 26.0.5, 27.0.2, and 28.0.0, an authenticated user with suffici…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.002 (37.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

Affected products

Aces Loris — versions < 26.0.5, >= 27.0.0, < 27.0.2

Weakness classification (CWE)

References

https://github.com/aces/Loris/security/advisories/GHSA-mpgc-c48m-6v2h (x_refsource_CONFIRM)
https://github.com/aces/Loris/releases/tag/v26.0.5 (x_refsource_MISC)
https://github.com/aces/Loris/releases/tag/v27.0.2 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-26984?: CVE-2026-26984 is a high-severity vulnerability in Aces Loris, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-02-25.
How severe is CVE-2026-26984?: High severity. CVSS v3 base score is 8.7 out of 10.