DEBIAN-CVE-2026-123586

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Source
https://security-tracker.debian.org/tracker/CVE-2026-123586
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123586.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-123586
Upstream
Published
2026-11-08T02:16:52Z
Modified
2026-11-08T16:00:06Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Hickory DNS 0.25.0-alpha.3 through 0.25.2 contains a query amplification vulnerability in its recursive resolver, which mishandles cyclic sibling name server referrals that lack glue records. Attackers controlling two zones whose name servers reference each other without glue records can make the recursor loop, sending many upstream queries, amplified further by zero-TTL NS records.

References

Affected packages

Debian:13 / 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-2026-123586.json"

Debian:14 / 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-2026-123586.json"

Debian:13 / 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-2026-123586.json"

Debian:14 / 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-2026-123586.json"