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.
Problem types
CWE-770 Allocation of resources without limits or throttling
Product status
Any version before 0.76.4
Any version before 0.75.9
Timeline
| 2026-04-19: | Initial report by Faisal Alhumaid |
| 2026-04-19: | Initial report by Mika Jarvinen |
| 2026-04-27: | Advisory published and patch distributed |
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.
References
docs.velociraptor.app/...uncements/advisories/cve-2026-6948/