CVE-2026-18636

MediumCVSS 6.8/10Last modified Oct 23, 2026

Description

The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.

Metrics

CVSS 3.1 6.8/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Weakness enumeration

CWE-288

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Aug 11, 2026
Last modified
Oct 23, 2026
NVD status
Awaiting Analysis

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