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CVE-2026-34985

LORIS has incorrect access checks in media module

Medium6.3EPSS 0.23%
Published
Updated
Reserved
Assigned by
GitHub_M

Description

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 16.1.0 to before 27.0.3 and 28.0.1, While the frontend of the media module filters files that the user should not have access to, the backend was not applying access checks and it would be possible for someone who should not have access to a file to access it if they know the filename. This vulnerability is fixed in 27.0.3 and 28.0.1.

Scores

CVSS scores of CVE-2026-34985, by who scored it
Scored byCVSSScoreVector
GitHub_MCNA (assigner)3.1Medium6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVDNVD · Analyzed3.1Medium6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
0.23% · top 86% of all CVEs (5 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.

Weakness

Affected products

  • aces · Loris

    • affected >= 16.1.0, < 27.0.3
    • affected >= 28.0.0, < 28.0.1

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .