Description

An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on some setups it might be possible to open enough concurrent DoH3 streams to trigger an out-of-memory condition, resulting in a denial of service.

Severity (CVSS)

Base score5.3
SeverityMedium
VersionCVSS 3.1
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Provided byCNA

Weaknesses

  • — Allocation of Resources Without Limits or Throttling
  • CWE-770 — CWE-770 Allocation of Resources Without Limits or Throttling

Affected products

VendorProductVersions
PowerDNSDNSdist1.9.0 to <1.9.15; 2.0.0 to <2.0.7

References

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 26 Jun 2026 07:05 UTC.