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CVE PROGRAM SOURCE RECORD3.7 Low

CVE-2026-52686

Wildcard CNAME proof validation bypass

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
OX

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

PowerDNS Recursor

Default version status: unaffected

  • 5.2.0 to < 5.2.12affected
  • 5.3.0 to < 5.3.9affected
  • 5.4.0 to < 5.4.4affected

References