This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-52686 →

DEBIAN-CVE-2026-52686

The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildca...

Original description

The description as published by the source.

The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildcard answer is a CNAME or DNAME record.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 pdns-recursor

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 pdns-recursor

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.12-0+deb13u1"}]}]

Debian:14 pdns-recursor

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.4-1"}]}]

References

advisory security-tracker.debian.org