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Details of issue NIXPKGS-2026-1243

NIXPKGS-2026-1243
published on
Permalink CVE-2026-33254
5.3 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): NONE
  • Availability impact (A): LOW
updated 6 days, 11 hours ago by @LeSuisse Activity log
  • Created suggestion 6 days, 17 hours ago
  • @LeSuisse accepted 6 days, 11 hours ago
  • @LeSuisse published on GitHub 6 days, 11 hours ago
Resource exhaustion via DoQ/DoH3 connections

An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.

Affected products

dnsdist
  • <1.9.13
  • <2.0.4

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