Vulnerability · Published Aug 11, 2026 · Assigned by rapid7
CVE-2026-18972Velociraptor authenticated identity-spoofing vulnerability
Critical 9.6
In plain English
A critical-severity authentication bypass by spoofing in Velociraptor from Rapid7. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.4%top 71.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \"Grpc-Metadata-USER\". This can lead to an account takeover attack from a user with low privileges to administrator.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Rapid7 | Velociraptor | 0 – before 0.77.2 |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N