Medium severity4.8NVD Advisory· Published Mar 31, 2026· Updated Apr 14, 2026

CVE-2026-27854

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

PowerDNS/Dnsdist2 versions
cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*range: >=1.9.0,<1.9.12
- (no CPE)
osv-coords2 versions
pkg:rpm/opensuse/dnsdist&distro=openSUSE%20Tumbleweed pkg:rpm/suse/dnsdist&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7
< 2.0.3-1.1+ 1 more
- (no CPE)range: < 2.0.3-1.1
- (no CPE)range: < 1.9.12-150700.3.9.1

Patches

Vulnerability mechanics

References

www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.htmlnvdVendor Advisory

News mentions

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cvss	0.312
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000