DEBIAN-CVE-2026-42004

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-42004
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42004.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-42004
Upstream
Published
2026-06-25T13:16:40.547Z
Modified
2026-07-10T04:00:07.702531548Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.

References

Affected packages

Debian:11 / dnsdist

Package

Name
dnsdist
Purl
pkg:deb/debian/dnsdist?arch=source&distro=bullseye

Affected ranges

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

Affected versions

1.*
1.5.1-3
1.6.0-1
1.6.0-2
1.6.1-1
1.7.0-1
1.7.1-1
1.7.2-1
1.7.2-2
1.7.3-1
1.7.3-2
1.8.0-1
1.8.1-1
1.8.2-1
1.8.2-2
1.8.2-3
1.8.3-1
1.8.3-2
1.8.3-3
1.9.3-1
1.9.4-1
1.9.5-1
1.9.6-1
1.9.8-1
1.9.9-1
1.9.10-1
2.*
2.0.0~rc1-1
2.0.0~rc1-2
2.0.0~rc2-1
2.0.0-1
2.0.0-2
2.0.0-3
2.0.0-4
2.0.0-5
2.0.0-6
2.0.1-1
2.0.2-1
2.0.3-1
2.0.4-1
2.0.5-1
2.0.5-2
2.0.5-3
2.0.6-1
2.1.0-1
2.1.0-2

Ecosystem specific 

{
    "urgency": "end-of-life"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42004.json"

Debian:12 / dnsdist

Package

Name
dnsdist
Purl
pkg:deb/debian/dnsdist?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.7.3-2
1.8.0-1
1.8.1-1
1.8.2-1
1.8.2-2
1.8.2-3
1.8.3-1
1.8.3-2
1.8.3-3
1.9.3-1
1.9.4-1
1.9.5-1
1.9.6-1
1.9.8-1
1.9.9-1
1.9.10-1
2.*
2.0.0~rc1-1
2.0.0~rc1-2
2.0.0~rc2-1
2.0.0-1
2.0.0-2
2.0.0-3
2.0.0-4
2.0.0-5
2.0.0-6
2.0.1-1
2.0.2-1
2.0.3-1
2.0.4-1
2.0.5-1
2.0.5-2
2.0.5-3
2.0.6-1
2.1.0-1
2.1.0-2

Ecosystem specific 

{
    "urgency": "end-of-life"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42004.json"

Debian:13 / dnsdist

Package

Name
dnsdist
Purl
pkg:deb/debian/dnsdist?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.9.15-0+deb13u1

Affected versions

1.*
1.9.10-1
1.9.10-1+deb13u1
1.9.14-0+deb13u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42004.json"

Debian:14 / dnsdist

Package

Name
dnsdist
Purl
pkg:deb/debian/dnsdist?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.1.0-1

Affected versions

1.*
1.9.10-1
2.*
2.0.0~rc1-1
2.0.0~rc1-2
2.0.0~rc2-1
2.0.0-1
2.0.0-2
2.0.0-3
2.0.0-4
2.0.0-5
2.0.0-6
2.0.1-1
2.0.2-1
2.0.3-1
2.0.4-1
2.0.5-1
2.0.5-2
2.0.5-3
2.0.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42004.json"