CVE-2026-52686
Fixed in a distro release EPSS <1%CVSS 3.7
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.
Products: powerdns recursor
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | pdns-recursor | no fix |
| Debian 13 | pdns-recursor | 5.2.12-0+deb13u1 |
| Debian 14 | pdns-recursor | 5.4.4-1 |
| Ubuntu 24.04 LTS | pdns-recursor | no fix |
| Ubuntu 26.04 LTS | pdns-recursor | no fix |
| Ubuntu 26.10 | pdns-recursor | no fix |
| Ubuntu Pro 16.04 LTS | pdns-recursor | no fix |
| Ubuntu Pro 18.04 LTS | pdns-recursor | no fix |
| Ubuntu Pro 20.04 LTS | pdns-recursor | no fix |
| Ubuntu Pro 22.04 LTS | pdns-recursor | no fix |