pdns-recursor: The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without sig...
CVE-2026-52686 is fixed in pdns-recursor on 1 platform, first by DEBIAN-CVE-2026-52686, released July 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pdns-recursor · Debian 13.5 (trixie) | 5.2.12-0+deb13u1 | DEBIAN-CVE-2026-52686 | Jul 23, 2026 |
| pdns-recursor · Debian 14 | 5.4.4-1 | DEBIAN-CVE-2026-52686 | Jul 23, 2026 |
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