CVE-2026-33595 (GCVE-0-2026-33595)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:47 – Updated: 2026-04-22 14:40
VLAI
Title
DoQ/DoH3 excessive memory allocation
Summary
A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 14:40 UTC
CWE
  • Allocation of Resources Without Limits or Throttling
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
OX CNA under the mitre root
CNA scorecard C 63/100 over 52 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
PowerDNS DNSdist Affected: 1.9.0 , < 1.9.13 (semver)
Affected: 2.0.0 , < 2.0.4 (semver)
guessed Create a notification for this product.
Date Public
2026-04-21 22:00
Credits
Mehtab Zafar
Show details on NVD website
To clipboard 

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