CVE-2026-18636
Velociraptor VFSGetBuffer API path deny list bypass
- State
- Published
- Severity
- 6.8 Medium
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Reserved
- Aug 3, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N | rapid7 |
Weaknesses
- CWE-288 Authentication bypass using an alternate path or channel
Affected Products
| Product | Versions |
|---|---|
VelociraptorRapid7 |
|
References
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