DEBIAN-CVE-2026-123591

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Source
https://security-tracker.debian.org/tracker/CVE-2026-123591
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123591.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-123591
Upstream
Published
2026-11-08T02:16:53Z
Modified
2026-11-08T16:00:08Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 fail to verify, per RFC 6840 ยง4.4, that an NSEC or NSEC3 record denying a DS RRset also proves the delegation's NS record exists. Attackers can reuse child-side NSEC or NSEC3 records to fake an insecure delegation and forge child-zone records.

References

Affected packages

Debian:14 / rust-hickory-net

Package

Name
rust-hickory-net
Purl
pkg:deb/debian/rust-hickory-net?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.*
0.26.1-1
0.26.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123591.json"

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-2026-123591.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

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-2026-123591.json"