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CVE-2026-33611

Medium priority
Needs evaluation

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.

1 affected package

pdns

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33610

Medium priority
Needs evaluation

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.

1 affected package

pdns

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33609

Medium priority
Needs evaluation

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

1 affected package

pdns

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33608

Medium priority
Needs evaluation

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...

1 affected package

pdns

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33601

Medium priority
Needs evaluation

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.

1 affected package

pdns-recursor

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns-recursor Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33600

Medium priority
Needs evaluation

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.

1 affected package

pdns-recursor

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns-recursor Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33262

Medium priority
Needs evaluation

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.

1 affected package

pdns-recursor

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns-recursor Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33261

Medium priority
Needs evaluation

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

1 affected package

pdns-recursor

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns-recursor Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33260

Medium priority
Needs evaluation

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.

3 affected packages

dnsdist, pdns, pdns-recursor

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
dnsdist Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
pdns Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
pdns-recursor Not affected Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33259

Medium priority
Needs evaluation

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.

1 affected package

pdns-recursor

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pdns-recursor Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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