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CVE-2026-33594
Published: Apr 22, 2026
Modified: Apr 22, 2026
PUBLISHED
CVSS v3.1
5.3
MEDIUM
Description
A client can trigger excessive memory allocation by generating a lot of queries that are routed to an overloaded DoH backend, causing queries to accumulate into a buffer that will not be released until the end of the connection.
| Vendor | Product | Versions |
|---|---|---|
PowerDNS | DNSdist | affected 1.9.0 - < 1.9.13affected 2.0.0 - < 2.0.4 |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
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