CVE-2026-24030
Unbounded memory allocation for DoQ and DoH3
- State
- Published
- Severity
- 5.3 Medium
- Published
- Mar 31, 2026
- Updated
- Mar 31, 2026
- Reserved
- Jan 20, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | OX |
Weaknesses
- CWE-789 Memory Allocation with Excessive Size Value
Affected Products
| Product | Versions |
|---|---|
DNSdistPowerDNS |
|
References
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