CVE-2026-26985Network attack vector

Authenticated configuration disclosure via unsafe path assembly

Published Feb 25, 2026 · Updated Feb 25, 2026

Path traversal in LORIS 24.0.0 through 26.0.4 and 27.0.0 through 27.0.1 allows remote authenticated users to read server files. The electrophysiology_browser Events and File_Reader handlers split an attacker-controlled path and concatenate its directory portion with the configured download root before passing only its basename to FilesDownloadHandler. Access requires an authenticated account with module permission; exposed configuration files can contain credentials usable against databases or other services when reused.

CVSS severity8.1
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in LORIS 24.0.0 through 26.0.4 and 27.0.0 through 27.0.1 allows remote authenticated users to read server files. The electrophysiology_browser Events and File_Reader handlers split an attacker-controlled path and concatenate its directory portion with the configured download root before passing only its basename to FilesDownloadHandler. Access requires an authenticated account with module permission; exposed configuration files can contain credentials usable against databases or other services when reused.

The record

CVE
CVE-2026-26985
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
McGill Centre for Integrative Neuroscience
Product
LORIS
Classifications
CWE-22, T1555.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 24.0.0, < 26.0.5
  2. Affected versionversion=>= 27.0.0, < 27.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

McGill Centre for Integrative Neuroscience · LORISversion=>= 24.0.0, < 26.0.5; version=>= 27.0.0, < 27.0.2

Published CVSS scores

8.1GitHub, Inc.CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1555.001Credentials from Password Stores: Credentials from Files

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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