DEBIAN-CVE-2026-123603

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Source
https://security-tracker.debian.org/tracker/CVE-2026-123603
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-123603
Upstream
Published
2026-11-08T02:16:55Z
Modified
2026-11-08T16:00:07Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

hickory-proto and hickory-resolver 0.26.0 before 0.26.2, hickory-server 0.25.0-alpha.1 before 0.26.2, and hickory-recursor 0.25.0-alpha.3 through 0.26.0-alpha.1 fail to canonicalize IPv4-mapped IPv6 addresses when checking deny_answers, deny_server, or AccessControlSet rules. Attackers can use IPv4-mapped addresses to evade answer filtering, trigger queries to denied nameservers, or reach hickory-server library deployments on dual-stack IPv6 sockets from denied clients.

References

Affected packages

Debian:13
rust-hickory-proto

Package

Name
rust-hickory-proto
Purl
pkg:deb/debian/rust-hickory-proto?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.24.4-2
0.24.4-3
0.24.4-4
0.24.4-4.1
0.24.4-5
0.24.4-6
0.25.2-1
0.25.2-2
0.25.2-3
0.26.1-1
0.26.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
rust-hickory-recursor

Package

Name
rust-hickory-recursor
Purl
pkg:deb/debian/rust-hickory-recursor?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.24.1-1
0.25.2-1
0.25.2-2
0.25.2-3
0.25.2-4
0.25.2-5
0.25.2-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
rust-hickory-resolver

Package

Name
rust-hickory-resolver
Purl
pkg:deb/debian/rust-hickory-resolver?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.24.4-1
0.24.4-2
0.24.4-3
0.24.4-4
0.24.4-5
0.25.2-1
0.25.2-2
0.26.1-1
0.26.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
rust-hickory-server

Package

Name
rust-hickory-server
Purl
pkg:deb/debian/rust-hickory-server?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.24.4-2
0.25.2-1
0.25.2-2
0.25.2-3
0.25.2-4
0.26.1-1
0.26.1-2
0.26.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
Debian:14
rust-hickory-proto

Package

Name
rust-hickory-proto
Purl
pkg:deb/debian/rust-hickory-proto?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.26.3-1

Affected versions

0.*
0.24.4-2
0.24.4-3
0.24.4-4
0.24.4-4.1
0.24.4-5
0.24.4-6
0.25.2-1
0.25.2-2
0.25.2-3
0.26.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
rust-hickory-recursor

Package

Name
rust-hickory-recursor
Purl
pkg:deb/debian/rust-hickory-recursor?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.24.1-1
0.25.2-1
0.25.2-2
0.25.2-3
0.25.2-4
0.25.2-5
0.25.2-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
rust-hickory-resolver

Package

Name
rust-hickory-resolver
Purl
pkg:deb/debian/rust-hickory-resolver?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.26.3-1

Affected versions

0.*
0.24.4-1
0.24.4-2
0.24.4-3
0.24.4-4
0.24.4-5
0.25.2-1
0.25.2-2
0.26.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"
rust-hickory-server

Package

Name
rust-hickory-server
Purl
pkg:deb/debian/rust-hickory-server?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.26.3-1

Affected versions

0.*
0.24.4-2
0.25.2-1
0.25.2-2
0.25.2-3
0.25.2-4
0.26.1-1
0.26.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123603.json"