DEBIAN-CVE-2026-123588

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Source
https://security-tracker.debian.org/tracker/CVE-2026-123588
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123588.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-123588
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

The recursive resolver in Hickory DNS (all versions of the hickory-recursor crate, and hickory-resolver 0.26.0 before 0.26.2) caches an empty connection pool when it follows a referral with no glue records and all queries for the name servers' IP addresses fail. An attacker able to spoof DNS responses can make these lookups fail, causing all subsequent queries for the affected zone to fail until the cache entry expires or is evicted.

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-2026-123588.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-2026-123588.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-2026-123588.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-2026-123588.json"