{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40011","assignerOrgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","state":"PUBLISHED","assignerShortName":"OX","dateReserved":"2026-04-08T09:59:59.341Z","datePublished":"2026-06-25T12:22:19.248Z","dateUpdated":"2026-06-25T13:23:46.840Z"},"containers":{"cna":{"providerMetadata":{"orgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","shortName":"OX","dateUpdated":"2026-06-25T12:22:19.248Z"},"title":"Prometheus denial of service via crafted DNS queries","datePublic":"2026-06-24T22:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Encoding or Escaping of Output","type":"CWE"}]}],"affected":[{"vendor":"PowerDNS","product":"DNSdist","collectionURL":"https://repo.powerdns.com/","packageName":"dnsdist","repo":"https://github.com/PowerDNS/pdns","modules":["Prometheus export"],"programFiles":["dnsdist-web.cc"],"versions":[{"status":"affected","version":"1.9.0","lessThan":"1.9.15","versionType":"semver"},{"status":"affected","version":"2.0.0","lessThan":"2.0.7","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.</p>"}]}],"references":[{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE","baseSeverity":"LOW","baseScore":3.7,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"}}],"credits":[{"lang":"en","value":"Haruki Oyama (Waseda University)","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-116","lang":"en","description":"CWE-116 Improper Encoding or Escaping of Output"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-25T13:23:09.989984Z","id":"CVE-2026-40011","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-25T13:23:46.840Z"}}]}}