CVE-2026-33611
Insufficient validation of HTTPS and SVCB records
6.5CVSSMEDIUM
Description
An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:HPrivileges RequiredHigh
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
powerdnsoss-projectDKNetworking Infrastructureaka powerdns recursor, powerdns authoritative, dnsdist
Attack Graph
Products CVE Techniques Tactics
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Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
MITRE ATT&CK
1 technique Initial Access
References
Timeline
Published
Apr 22, 2026
Last Updated
May 12, 2026
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