CVE-2026-27854

CVE-2026-27854CVE-2026-27854

powerdns / dnsdist

Description

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.

Scoring

CVSS 4.8 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Last modified2026-07-25
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.