{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33595","assignerOrgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","state":"PUBLISHED","assignerShortName":"OX","dateReserved":"2026-03-23T12:57:56.814Z","datePublished":"2026-04-22T13:47:55.543Z","dateUpdated":"2026-04-22T14:40:28.647Z"},"containers":{"cna":{"providerMetadata":{"orgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","shortName":"OX","dateUpdated":"2026-04-22T13:47:55.543Z"},"title":"DoQ/DoH3 excessive memory allocation","datePublic":"2026-04-21T22:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","description":"Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"affected":[{"vendor":"PowerDNS","product":"DNSdist","collectionURL":"https://repo.powerdns.com/","packageName":"dnsdist","repo":"https://github.com/PowerDNS/pdns","modules":["DNS over QUIC","DNS over HTTP3"],"programFiles":["doq.cc","doh3.cc"],"versions":[{"status":"affected","version":"1.9.0","lessThan":"1.9.13","versionType":"semver"},{"status":"affected","version":"2.0.0","lessThan":"2.0.4","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection.</p>"}]}],"references":[{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}}],"credits":[{"lang":"en","value":"Mehtab Zafar","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-770","lang":"en","description":"CWE-770 Allocation of Resources Without Limits or Throttling"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T14:40:24.979374Z","id":"CVE-2026-33595","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-04-22T14:40:28.647Z"}}]}}