CVE-2026-18636
Velociraptor VFSGetBuffer API path deny list bypass
CVSS Score
6.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-288 |
| Vendor | rapid7 |
| Product | velociraptor |
| Published | Aug 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
Rapid7 / Velociraptor
0 < 0.77.2
References
Credits
Itay Vardi