RCE in Rapid7 Velociraptor
CVE-2026-8795
A YAML injection vulnerability exists in the Windows.Collectors.Remapping artifact of Rapid7 Velociraptor before version 0.76.6. The hostname field in client_info.json inside a collection ZIP is inserted into a YAML template via Go's text/template without escaping. An attacker providing a crafted collection ZIP can leverage literal double quotes and newlines in the hostname to break out of the YAML quoted string and inject a new mount remapping entry. When an analyst applies the generated remapping file with --remap, arbitrary VQL executes on their machine with NullACLManager (all permissions granted, unsandboxed).
EPSS: 0.001 (4.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Rapid7 Velociraptor — versions 0
Weakness classification (CWE)
References
- cve@rapid7.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-8795?
- CVE-2026-8795 is a high-severity vulnerability in Rapid7 Velociraptor, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.8/10. Published 2026-06-09.
- How severe is CVE-2026-8795?
- High severity. CVSS v3 base score is 7.8 out of 10.