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Permalink CVE-2026-42389
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): None (N)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
Reject more queries with invalid header values

This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.

Affected products

pdns-recursor
  • <5.4.3

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-33612
7.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Changed (C)
  • Confidentiality (C): None (N)
  • Integrity (I): High (H)
  • Availability (A): Low (L)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Changed (C)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): Low (L)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
ZoneToCache can poison the cache

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.

Affected products

pdns-recursor
  • <5.2.11
  • <5.4.3
  • <5.3.8

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-40012
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): Low (L)
  • Integrity (I): None (N)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): Low (L)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): None (N)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
Information about ECS zero scoped answers might leak to clients that use a specific ECS

ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;

Affected products

pdns-recursor
  • <5.2.11
  • <5.4.3
  • <5.3.8

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-42387
5.9 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
Insufficient input validation in ZoneToCache

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.

Affected products

pdns-recursor
  • <5.2.11
  • <5.4.3
  • <5.3.8

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-42388
5.9 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
Missing input validation for catalog zones

Incomplete validation of the SOA record present in a catalog zone might lead to a crash.

Affected products

pdns-recursor
  • <5.2.11
  • <5.4.3
  • <5.3.8

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-42390
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): None (N)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
ZONEMD validation can be bypassed

An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.

Affected products

pdns-recursor
  • <5.4.3

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-52690
5.9 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 3 weeks, 5 days ago by @LeSuisse Activity log
  • Created suggestion 3 weeks, 6 days ago
  • @LeSuisse ignored package rotp 3 weeks, 5 days ago
  • @LeSuisse accepted 3 weeks, 5 days ago
  • @LeSuisse published on GitHub 3 weeks, 5 days ago
Spoofed answers can mark an authoritative non-EDNS capable

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.

Affected products

pdns-recursor
  • <5.2.11
  • <5.4.3
  • <5.3.8

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04
  • nixos-26.05 1.04
    • nixos-26.05-small 1.04
    • nixpkgs-26.05-darwin 1.04

Package maintainers

Permalink CVE-2026-33260
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): Low (L)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): Low (L)
updated 2 months, 4 weeks ago by @LeSuisse Activity log
  • Created suggestion 3 months ago
  • @LeSuisse ignored
    7 packages
    • rotp
    • pdnsd
    • dnsdist
    • pdnsgrep
    • pdns-recursor
    • home-assistant-component-tests.namecheapdns
    • tests.home-assistant-components.namecheapdns
    2 months, 4 weeks ago
  • @LeSuisse accepted 2 months, 4 weeks ago
  • @LeSuisse restored
    2 packages
    • dnsdist
    • pdns-recursor
    2 months, 4 weeks ago
  • @LeSuisse published on GitHub 2 months, 4 weeks ago
Insufficient input validation of internal webserver

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Affected products

pdns
  • <4.9.14
  • <5.0.4
dnsdist
  • <2.0.4
  • <1.9.13
pdns-recursor
  • <5.2.9
  • <5.4.1
  • <5.3.6

Matching in nixpkgs

pkgs.pdns

Authoritative DNS server

Ignored packages (5)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04

pkgs.pdnsgrep

Search tool for PowerDNS logs

Package maintainers

https://blog.powerdns.com/2026/04/22/powerdns-security-advisory-2026-05-for-powerdns-authoritative-server
Permalink CVE-2026-33257
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): Low (L)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): Low (L)
updated 2 months, 4 weeks ago by @LeSuisse Activity log
  • Created suggestion 3 months ago
  • @LeSuisse ignored
    5 packages
    • rotp
    • pdnsgrep
    • pdnsd
    • tests.home-assistant-components.namecheapdns
    • home-assistant-component-tests.namecheapdns
    2 months, 4 weeks ago
  • @LeSuisse accepted 2 months, 4 weeks ago
  • @LeSuisse published on GitHub 2 months, 4 weeks ago
Insufficient input validation of internal webserver

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Affected products

pdns
  • <4.9.14
  • <5.0.4
dnsdist
  • <2.0.4
  • <1.9.13
pdns-recursor
  • <5.2.9
  • <5.4.1
  • <5.3.6

Matching in nixpkgs

pkgs.pdns

Authoritative DNS server

Ignored packages (5)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04

pkgs.pdnsgrep

Search tool for PowerDNS logs

Package maintainers

https://blog.powerdns.com/2026/04/22/powerdns-security-advisory-2026-05-for-powerdns-authoritative-server
Permalink CVE-2026-33261
5.9 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 2 months, 4 weeks ago by @LeSuisse Activity log
  • Created suggestion 3 months ago
  • @LeSuisse ignored package rotp 2 months, 4 weeks ago
  • @LeSuisse accepted 2 months, 4 weeks ago
  • @LeSuisse published on GitHub 2 months, 4 weeks ago
Null pointer accces in aggressive NSEC(3) cache

A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.

Affected products

pdns-recursor
  • <5.2.9
  • <5.4.1
  • <5.3.6

Matching in nixpkgs

Ignored packages (1)

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable 1.04
    • nixpkgs-unstable 1.04
    • nixos-unstable-small 1.04

Package maintainers