{"id":"CVE-2026-24030","state":"PUBLISHED","title":"Unbounded memory allocation for DoQ and DoH3","description":"An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.","publishedAt":"2026-03-31T12:01:00.883Z","updatedAt":"2026-03-31T13:14:57.345Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"OX"},"assigner":"OX","products":["PowerDNS DNSdist"],"affected":[{"vendor":"PowerDNS","product":"DNSdist","packageName":"dnsdist","defaultStatus":"unaffected","versions":[{"version":"1.9.0","status":"affected","lessThan":"1.9.12","versionType":"semver"},{"version":"2.0.0","status":"affected","lessThan":"2.0.3","versionType":"semver"}],"collectionURL":"https://repo.powerdns.com/","modules":["Incoming DNS over QUIC","Incoming DNS over HTTP/3"],"programFiles":["doq.cc","doh3.cc"],"repo":"https://github.com/PowerDNS/pdns"}],"references":["https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html"],"weaknesses":["CWE-789"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/24xxx/CVE-2026-24030.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-24030","state":"PUBLISHED","datePublished":"2026-03-31T12:01:00.883Z","dateUpdated":"2026-03-31T13:14:57.345Z","assignerShortName":"OX","assignerOrgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","dateReserved":"2026-01-20T14:56:25.872Z"},"containers":{"cna":{"title":"Unbounded memory allocation for DoQ and DoH3","descriptions":[{"lang":"en","value":"An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process."}],"affected":[{"vendor":"PowerDNS","product":"DNSdist","packageName":"dnsdist","defaultStatus":"unaffected","versions":[{"version":"1.9.0","status":"affected","lessThan":"1.9.12","versionType":"semver"},{"version":"2.0.0","status":"affected","lessThan":"2.0.3","versionType":"semver"}],"collectionURL":"https://repo.powerdns.com/","modules":["Incoming DNS over QUIC","Incoming DNS over HTTP/3"],"programFiles":["doq.cc","doh3.cc"],"repo":"https://github.com/PowerDNS/pdns"}],"references":[{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"description":"Uncontrolled Memory Allocation","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"OX","orgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","dateUpdated":"2026-03-31T12:01:00.883Z"},"credits":[{"lang":"en","type":"finder","value":"XavLimSG"}],"datePublic":"2026-03-30T22:00:00.000Z","source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T13:14:53.937284Z","id":"CVE-2026-24030","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-789","type":"CWE","lang":"en","description":"CWE-789 Memory Allocation with Excessive Size Value"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-31T13:14:57.345Z"}}]}}}