CVE-2026-6948 (GCVE-0-2026-6948)

Vulnerability from cvelistv5 – Published: 2026-05-03 23:55 – Updated: 2026-06-19 12:45
VLAI
Title
Unbounded Memory Allocation in VQLResponse Result-Set Writer
Summary
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.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 13:08 UTC
CWE
  • CWE-770 - Allocation of resources without limits or throttling
Assigner
References
Impacted products
Vendor Product Version
Rapid7 Velociraptor Affected: 0 , < 0.76.4 (custom)
Affected: 0 , < 0.75.9 (custom)
Create a notification for this product.
Date Public
2026-04-27 14:00
Credits
We thank Faisal Alhumaid (Faisal.alhumaid@hotmail.com) for reporting this issue responsibly. We also thank Mika Jarvinen (mika.jarvinen@kapsi.fi) for reporting this issue responsibly at the same time. We also thank HE WEI（ギカク）(https://www.linkedin.com/in/gikaku/) for identifying and reporting an additional vulnerable code path related to this issue.
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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