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CVE-2026-97206

Medium priority
Needs evaluation

(NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contain ...)

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-96405

Medium priority
Needs evaluation

(NLnet Labs Unbound up to and including version 1.26.1 limits compressi ...)

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-50106

Medium priority
Needs evaluation

(When NLnet Labs Unbound up to and including version 1.26.1 is configur ...)

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-35501

Medium priority
Needs evaluation

(When NLnet Labs Unbound 1.0.1 up to and including version 1.26.1 is co ...)

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-109125

Medium priority
Needs evaluation

(In NLnet Labs Unbound up to and including version 1.26.1, an observabl ...)

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-85501

Medium priority

Some fixes available 7 of 8

Novel vulnerabilities to launch algorithmic complexity attacks on DNSSEC have been researched under the term 'ReTrap'. These result in degradation of service when malicious zones are used to serve the algorithmic complexity...

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Fixed Fixed Fixed Fixed Fixed
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CVE-2026-82720

Medium priority
Needs evaluation

NLnet Labs Unbound 1.12.0 up to and including 1.26.0 has a use-after-free vulnerability when compiled for DNS-over-HTTPs support with '--with-libnghttp2'. During failure code paths (i.e., RPZ drop query, jostle due to heavy...

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-82717

Medium priority

Some fixes available 7 of 8

In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The...

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Fixed Fixed Fixed Fixed Fixed
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CVE-2026-81642

Medium priority

Some fixes available 7 of 8

In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and possible remote code execution as a result of digesting DNSKEYs. A DNSKEY with an...

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Fixed Fixed Fixed Fixed Fixed
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CVE-2026-81634

Medium priority

Some fixes available 7 of 8

In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow during the RRSet canonicalisation routine. This is caused by missing to add the first owner...

1 affected package

unbound

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
unbound Fixed Fixed Fixed Fixed Fixed
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