CVE-2026-33595

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...

UBUNTU-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...

CVE-2026-33609

Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees...

CVE-2026-33610 Possible file descriptor exhaustion in forward-dnsupdate

A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it...

CVE-2026-33610

A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it...

CVE-2026-33609 LDAP DN injection

Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees...

CVE-2026-33609

Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees...

CVE-2026-33609

Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees...

CVE-2026-33593 Denial of service via crafted DNSCrypt query

A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query...

CVE-2026-33594

CVE-2026-33594 describes a memory exhaustion issue where a client floods a DoH backend with queries, causing excess memory allocation as queries accumulate in a buffer that is only released at the end of the connection. The connected sources confirm the root cause (buffer growth tied to overloade...

CVE-2026-33594

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 a buffer that will not be released until the end of the connection...

CVE-2026-33594 Outgoing DoH excessive memory allocation

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 a buffer that will not be released until the end of the connection...

CVE-2026-33594 Outgoing DoH excessive memory allocation

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 a buffer that will not be released until the end of the connection...

CVE-2026-33594 Outgoing DoH excessive memory allocation

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 a buffer that will not be released until the end of the connection...

CVE-2026-33595 DoQ/DoH3 excessive memory allocation

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...

CVE-2026-33595 DoQ/DoH3 excessive memory allocation

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...

CVE-2026-33595

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...

CVE-2026-33595

The connected documents independently confirm CVE-2026-33595 affects PowerDNS DNSdist, describing a flaw where a client can trigger excessive memory allocation by generating many error responses over a single DoQ/DoH3 connection, with resources not released until connection end. This is the state...

CVE-2026-33596 TCP backend stream ID overflow

A client might theoretically be able to cause a mismatch between queries sent to a backend and the received responses by sending a flood of perfectly timed queries that are routed to a TCP-only or DNS over TLS backend...

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...