CVE-2026-52688
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
| Vendor | powerdns |
| Product | recursor |
| Published | Jul 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
PowerDNS / Recursor
5.2.0 < 5.2.12 5.3.0 < 5.3.9 5.4.0 < 5.4.4
References
Credits
Qifan Zhang from Palo Alto Networks