CVE-2026-27854

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

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, 16:09

Type	Values Removed	Values Added
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
First Time		Powerdns dnsdist Powerdns

31 Mar 2026, 14:16

Type	Values Removed	Values Added
CWE		CWE-416

31 Mar 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-31 12:16

Updated : 2026-04-14 16:09

NVD link : CVE-2026-27854

Mitre link : CVE-2026-27854

CVE.ORG link : CVE-2026-27854

JSON object : View

Products Affected

powerdns

dnsdist

CWE

CWE-416

Use After Free

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