CVE-2026-18636 — Velociraptor VFSGetBuffer API path deny list bypass
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 r…
Published: 2026-08-11 · CVSS: 6.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7