{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-24030", "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "state": "PUBLISHED", "assignerShortName": "OX", "dateReserved": "2026-01-20T14:56:25.872Z", "datePublished": "2026-03-31T12:01:00.883Z", "dateUpdated": "2026-03-31T13:14:57.345Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.powerdns.com/", "defaultStatus": "unaffected", "modules": ["Incoming DNS over QUIC", "Incoming DNS over HTTP/3"], "packageName": "dnsdist", "product": "DNSdist", "programFiles": ["doq.cc", "doh3.cc"], "repo": "https://github.com/PowerDNS/pdns", "vendor": "PowerDNS", "versions": [{"lessThan": "1.9.12", "status": "affected", "version": "1.9.0", "versionType": "semver"}, {"lessThan": "2.0.3", "status": "affected", "version": "2.0.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "XavLimSG"}], "datePublic": "2026-03-30T22:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>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.</p>"}], "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."}], "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": {"orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "shortName": "OX", "dateUpdated": "2026-03-31T12:01:00.883Z"}, "references": [{"url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html"}], "source": {"discovery": "UNKNOWN"}, "title": "Unbounded memory allocation for DoQ and DoH3", "x_generator": {"engine": "Vulnogram 0.5.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-789", "lang": "en", "description": "CWE-789 Memory Allocation with Excessive Size Value"}]}], "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"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-31T13:14:57.345Z"}}]}}

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{"cveTags": [], "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."}], "id": "CVE-2026-24030", "lastModified": "2026-03-31T12:16:27.770", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@open-xchange.com", "type": "Secondary"}]}, "published": "2026-03-31T12:16:27.770", "references": [{"source": "security@open-xchange.com", "url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html"}], "sourceIdentifier": "security@open-xchange.com", "vulnStatus": "Received"}

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