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CVE-2026-8795 Rapid7 CVE debrief

CVE-2026-8795 is a high-severity vulnerability in Rapid7 Velociraptor, a threat detection and response platform. The vulnerability exists in the Windows.Collectors.Remapping artifact and allows for YAML injection attacks. An attacker can provide a crafted collection ZIP file that, when processed, injects arbitrary VQL code, leading to code execution with elevated privileges.

Vendor
Rapid7
Product
Velociraptor
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Security teams and administrators responsible for Rapid7 Velociraptor installations, particularly those using versions prior to 0.76.6, should be aware of this vulnerability and take immediate action to mitigate the risk.

Technical summary

The vulnerability arises from the hostname field in client_info.json inside a collection ZIP being inserted into a YAML template without proper escaping. This allows an attacker 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, the injected VQL code executes with NullACLManager, granting all permissions and running unsandboxed.

Defensive priority

High

Recommended defensive actions

  • Upgrade Rapid7 Velociraptor to version 0.76.6 or later.
  • Restrict access to collection ZIP files to prevent tampering.
  • Monitor for suspicious activity and VQL execution.

Evidence notes

The CVE-2026-8795 record was published on June 9, 2026, and last modified on June 9, 2026. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-8795 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-8795

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-8795 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-8795

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.