{"id":"CVE-2026-6948","state":"PUBLISHED","title":"Unbounded Memory Allocation in VQLResponse Result-Set Writer","description":"Velociraptor versions prior to 0.76.4 contain a resource exhaustion vulnerability in the server's agent control channel.\n\n\n\nThis 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.","publishedAt":"2026-05-03T23:55:40.555Z","updatedAt":"2026-06-19T12:45:13.562Z","severity":{"score":4.9,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","source":"rapid7"},"assigner":"rapid7","products":["Rapid7 Velociraptor"],"affected":[{"vendor":"Rapid7","product":"Velociraptor","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.76.4","versionType":"custom"},{"version":"0","status":"affected","lessThan":"0.75.9","versionType":"custom"}],"platforms":["Linux"],"repo":"https://github.com/Velocidex/velociraptor"}],"references":["https://docs.velociraptor.app/announcements/advisories/cve-2026-6948/"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/6xxx/CVE-2026-6948.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6948","state":"PUBLISHED","datePublished":"2026-05-03T23:55:40.555Z","dateUpdated":"2026-06-19T12:45:13.562Z","assignerShortName":"rapid7","assignerOrgId":"9974b330-7714-4307-a722-5648477acda7","dateReserved":"2026-04-24T03:35:48.568Z"},"containers":{"cna":{"title":"Unbounded Memory Allocation in VQLResponse Result-Set Writer","descriptions":[{"lang":"en","value":"Velociraptor versions prior to 0.76.4 contain a resource exhaustion vulnerability in the server's agent control channel.\n\n\n\nThis 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."}],"affected":[{"vendor":"Rapid7","product":"Velociraptor","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.76.4","versionType":"custom"},{"version":"0","status":"affected","lessThan":"0.75.9","versionType":"custom"}],"platforms":["Linux"],"repo":"https://github.com/Velocidex/velociraptor"}],"references":[{"url":"https://docs.velociraptor.app/announcements/advisories/cve-2026-6948/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":4.9,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770 Allocation of resources without limits or throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"rapid7","orgId":"9974b330-7714-4307-a722-5648477acda7","dateUpdated":"2026-06-19T12:45:13.562Z"},"datePublic":"2026-04-27T14:00:00.000Z","impacts":[{"capecId":"CAPEC-130","descriptions":[{"lang":"en","value":"CAPEC-130 Excessive Allocation"}]}],"solutions":[{"lang":"en","value":"To remediate, you will need to  upgrade your server https://www.velociraptor-docs.org/docs/deployment/server/upgrades/#upgrading-a-server-in-place-upgrade  to the latest version of your release:\n\n  *  For 0.76 releases, upgrade immediately to  v0.76.4 https://github.com/Velocidex/velociraptor/releases/download/v0.76/velociraptor-v0.76.4-linux-amd64 \n  *  For 0.75 releases, upgrade immediately to  v0.75.9 https://github.com/Velocidex/velociraptor/releases/download/v0.75/velociraptor-v0.75.9-linux-amd64","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>To remediate, you will need to&nbsp;<a href=\"https://www.velociraptor-docs.org/docs/deployment/server/upgrades/#upgrading-a-server-in-place-upgrade\">upgrade your server</a>&nbsp;to the latest version of your release:</p><ul><li>For 0.76 releases, upgrade immediately to&nbsp;<a href=\"https://github.com/Velocidex/velociraptor/releases/download/v0.76/velociraptor-v0.76.4-linux-amd64\" target=\"_blank\">v0.76.4</a></li><li>For 0.75 releases, upgrade immediately to&nbsp;<a href=\"https://github.com/Velocidex/velociraptor/releases/download/v0.75/velociraptor-v0.75.9-linux-amd64\" target=\"_blank\">v0.75.9</a></li></ul>"}]}],"timeline":[{"time":"2026-04-19T14:00:00.000Z","lang":"en","value":"Initial report by Faisal Alhumaid"},{"time":"2026-04-19T14:00:00.000Z","lang":"en","value":"Initial report by Mika Jarvinen"},{"time":"2026-04-27T23:50:00.000Z","lang":"en","value":"Advisory published and patch distributed"}],"credits":[{"lang":"en","value":"We thank Faisal Alhumaid (Faisal.alhumaid@hotmail.com) for reporting this issue responsibly.","type":"finder"},{"lang":"en","value":"We also thank Mika Jarvinen (mika.jarvinen@kapsi.fi) for reporting this issue responsibly at the same time.","type":"finder"},{"lang":"en","value":"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.","type":"finder"}],"source":{"advisory":"https://www.velociraptor-docs.org/announcements/advisories/cve-2","discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-04T13:08:05.344047Z","id":"CVE-2026-6948","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-04T13:08:18.314Z"}}]}}}