CVE-2026-33254

CVE-2026-33254 affects PowerDNS DNSdist. An attacker can open a large number of concurrent DoQ/DoH3 connections, causing unbounded memory allocation and denial of service. DoQ/DoH3 are disabled by default, which mitigates impact per the sources; no patch/version details are provided in the docume...

CVE-2026-33254 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...

CVE-2026-33254 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...

CVE-2026-33254

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...

PowerDNS DNSdist security vulnerabilities

PowerDNS DNSdist is a proxy software provided by PowerDNS that offers capabilities for DNS traffic load balancing and security protection. PowerDNS DNSdist has a security vulnerability that stems from the ability of clients to trigger excessive memory allocation by generating numerous error...

PowerDNS DNSdist security vulnerabilities

PowerDNS DNSdist is a proxy software provided by PowerDNS that offers capabilities for DNS traffic load balancing and security protection. PowerDNS DNSdist has a security vulnerability that stems from the ability of clients to trigger excessive memory allocation by generating a large number of...

PT-2026-34436

Name of the Vulnerable Software and Affected Versions DNSdist affected versions not specified Description An attacker can create a large number of concurrent DoQ DNS over QUIC or DoH3 DNS over HTTP/3 connections, causing unlimited memory allocation and leading to a denial of service. DoQ and DoH3...

Linux Distros Unpatched Vulnerability : CVE-2026-33594

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A client can trigger excessive memory allocation by generating a lot of queries that are routed to an overloaded DoH backend, causing queries to accumulate into...

OPENSUSE-SU-2026:20461-1 Security update for dnsdist

This update for dnsdist fixes the following issues: Update to dnsdist 1.9.11: - CVE-2025-8671: add mitigations for the HTTP/2 MadeYouReset attack bsc1253852. - CVE-2025-30187: denial of service via crafted DoH exchange bsc1250054...

Linux Distros Unpatched Vulnerability : CVE-2026-24029

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skippe...

SUSE CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

UBUNTU-CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029 DNS over HTTPS ACL bypass

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

CVE-2026-24029 affects a DNS-over-HTTPS frontend using the nghttp2 provider. When the early_acl_drop (earlyACLDrop in Lua) option is disabled, the ACL check is skipped, permitting all clients to issue DoH queries regardless of the configured ACL. The default setting enables early_acl_drop, so the...

CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029 DNS over HTTPS ACL bypass

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029 DNS over HTTPS ACL bypass

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029: Incorrect Authorization

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...