CVE-2026-24030
Unbounded memory allocation for DoQ and DoH3
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.
| Vendor | powerdns |
| Product | dnsdist |
| Published | Mar 31, 2026 |
| Last Updated | Mar 31, 2026 |
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CVSS v3 Breakdown
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
Affected Versions
PowerDNS / DNSdist
1.9.0 < 1.9.12 2.0.0 < 2.0.3
References
Credits
XavLimSG