Medium severity · published May 3, 2026
CVE-2026-6948
Unbounded Memory Allocation in VQLResponse Result-Set Writer
4.9
CVSS
0.3%
EPSS
No
On KEV
Description
Velociraptor versions prior to 0.76.4 contain a resource exhaustion vulnerability in the server's agent control channel.
This allows a compromised or rogue Velociraptor client to crash the server via out-of-memory (OOM) by sending crafted messages through the normal client communication channel.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · 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 0.76.4; before 0.75.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6948
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6948
docs.velociraptor.app
https://docs.velociraptor.app/announcements/advisories/cve-2026-6948/
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