CVE-2026-52684
Prefetch Feature Allows Persistent Ghost Domain Cache Poisoning Attack
Published: Jul 23, 2026Updated: Jul 23, 2026 Sources: CVE List NVD
Description
If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data. This does not happen on regular resolve as then then the child records are used immediately if not expired and thus valid, or the records are expired, and in that case not used. So this case can only happen if almost expired records are used to refresh the authoritative NS records.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:HAttack ComplexityHigh
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:LIntegrityLow
A:NAvailabilityNone
Affected Products
PowerDNS
oss-project·DKaka powerdns authoritative, powerdns recursor, dnsdist
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
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