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CVE-2026-42002

Concurrency and locking defects in GSS-TSIG

Concurrency and locking defects in GSS-TSIG

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative
CVE-2026-42396

Insufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to Fail

Insufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to Fail

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative
CVE-2026-33611

Insufficient validation of HTTPS and SVCB records

An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative
CVE-2026-33261

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.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-33260

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.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative Dnsdist Recursor
CVE-2026-33258

Crafted zones can cause increased resource usage

By publishing and querying a crafted zone an attacker can cause allocation of large entries in the negative and aggressive NSEC(3) caches.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-33256

Unbounded memory allocation by internal web server

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.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-33257

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.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative Dnsdist Recursor
CVE-2026-33259

Concurrent modification of RPZ data can lead to denial of servce

Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-33262

Insufficient validation of cookie reply

An attacker can send replies that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service. Cookies are disabled by default.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-33600

Null pointer dereference in RPZ transfer

An RPZ sent by a malicious authoritative server can result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
CVE-2026-33601

Insufficient validation of zonemd record

If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Recursor
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.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Dnsdist
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.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative
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.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative
CVE-2026-33608

Incomplete domain name sanitization during

An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its configuration to an invalid one, leading to the backend no longer able to run on the next restart, requiring manual operation to fix it.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Authoritative
CVE-2026-33602

Off-by-one access when processing crafted UDP responses

A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Dnsdist
CVE-2026-33599

Out-of-bounds read in service discovery

A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade (Lua) option to newServer or auto_upgrade (YAML) settings. DDR upgrade is not enabled by default.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Vendors
Powerdns
Products
Dnsdist
CVE-2026-33598

Out-of-bounds read in cache inspection via Lua

A cached crafted response can cause an out-of-bounds read if custom Lua code calls getDomainListByAddress() or getAddressListByDomain() on a packet cache.

CVSS 3.1 · 4.8 Medium EPSS 1.1% KEV · Not listed
Vendors
Powerdns
Products
Dnsdist