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Critical severity · published Aug 11, 2026
CVE-2026-18972
Velociraptor authenticated identity-spoofing vulnerability
9.6
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VE
Velociraptor · Rapid7
before 0.77.2 · source: vendor
Affected product
VE
Velociraptor
Rapid7
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18972
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18972
docs.velociraptor.app
http://docs.velociraptor.app/announcements/advisories/cve-2026-18972/
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