DEBIAN-CVE-2026-93008

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-93008
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93008.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-93008
Upstream
  • CVE-2026-93008
Published
2026-10-29T13:17:16Z
Modified
2026-10-30T07:47:26Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in dnsmasq. When following a CNAME in a DNS response, the resolver can cache records for the CNAME target without checking that those records belong to the responding server's authorized zone. In split-DNS deployments that send some domains to a specific upstream, an attacker who controls that upstream can inject cache entries for unrelated names. Later clients may then receive attacker-chosen addresses for those names.

References

Affected packages

Debian:12 / dnsmasq

Package

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

Affected ranges

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

Affected versions

2.*
2.89-1
2.90-1
2.90-2
2.90-3
2.90-4~deb12u1
2.90-4~deb12u2
2.90-4
2.90-5
2.90-6
2.90-7
2.91~test6-1
2.91~test9-1
2.91-1
2.92~rc1-1
2.92~rc3-1
2.92-1~exp1
2.92-1
2.92-1+exp1
2.92-2
2.92-3
2.92-4
2.92-5
2.93-1
2.93-2
2.93-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93008.json"

Debian:13 / dnsmasq

Package

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

Affected ranges

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

Affected versions

2.*
2.91-1
2.91-1+deb13u1
2.91-1+deb13u2
2.92~rc1-1
2.92~rc3-1
2.92-1~exp1
2.92-1
2.92-1+exp1
2.92-2
2.92-3
2.92-4
2.92-5
2.93-1
2.93-2
2.93-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93008.json"

Debian:14 / dnsmasq

Package

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

Affected ranges

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

Affected versions

2.*
2.91-1
2.92~rc1-1
2.92~rc3-1
2.92-1~exp1
2.92-1
2.92-1+exp1
2.92-2
2.92-3
2.92-4
2.92-5
2.93-1
2.93-2
2.93-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93008.json"