CVE-2026-24030

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:powerdns:dnsdist::::::::
	cpe:2.3:a:powerdns:dnsdist::::::::

History

14 Apr 2026, 16:15

Type	Values Removed	Values Added
First Time		Powerdns dnsdist Powerdns
CPE		cpe:2.3:a:powerdns:dnsdist::::::::
References	~~() https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html -~~	() https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html - Vendor Advisory

31 Mar 2026, 14:16

Type	Values Removed	Values Added
CWE		CWE-789

31 Mar 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-31 12:16

Updated : 2026-04-14 16:15

NVD link : CVE-2026-24030

Mitre link : CVE-2026-24030

CVE.ORG link : CVE-2026-24030

JSON object : View

Products Affected

powerdns

dnsdist

CWE

CWE-789

Memory Allocation with Excessive Size Value

{"id": "CVE-2026-24030", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security@open-xchange.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-03-31T12:16:27.770", "references": [{"url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html", "tags": ["Vendor Advisory"], "source": "security@open-xchange.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-789"}]}], "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."}], "lastModified": "2026-04-14T16:15:28.823", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "628B3B94-81DE-496E-B36A-B79A3DFFE1F4", "versionEndExcluding": "1.9.12", "versionStartIncluding": "1.9.0"}, {"criteria": "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9AC850DD-FDD8-4C48-B861-4BBAF423FF57", "versionEndExcluding": "2.0.3", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@open-xchange.com"}