DEBIAN-CVE-2026-67407

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Source
https://security-tracker.debian.org/tracker/CVE-2026-67407
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67407.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-67407
Upstream
Published
2026-09-25T17:17:12Z
Modified
2026-09-26T05:00:11Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3 and 4.2.9 and 4.1.14 and 4.0.23, Incomplete fix for CVE-2026-44838: escaperegexchar/1 does not escape -, leaving room for an MQTT topic permission bypass. the CVE-2026-44838 fix made expandtopicpermission/2 escape regex metacharacters in expanded topic-permission variables (escaperegex(V)), but escaperegexchar/1 escapes \ ^ $ . | ? + ( ) [ ] { } and omits -. When a topic permission template places {clientid} inside a [...] character class A low-privileged authenticated MQTT user controlling its clientid can broaden topic authorization (read and write) when templates embed {clientid} in a [...] This issue is fixed in versions 4.3.3 and 4.2.9 and 4.1.14 and 4.0.23.

References

Affected packages

Debian:12 / rabbitmq-server

Package

Name
rabbitmq-server
Purl
pkg:deb/debian/rabbitmq-server?arch=source&distro=bookworm

Affected ranges

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

Affected versions

3.*
3.10.8-1.1
3.10.8-1.1+deb12u1
3.10.8-2
3.10.8-3
3.10.8-4
3.12.1-1
3.12.1-1.1
4.*
4.0.5-1
4.0.5-2
4.0.5-3
4.0.5-4
4.0.5-5
4.0.5-6
4.0.5-8
4.0.5-9
4.0.5-10
4.0.5-11
4.0.5-12
4.0.5-13
4.0.5-14
4.3.0-1
4.3.0-2
4.3.0-3
4.3.2-1
4.3.2-2
4.3.2-3
4.3.2-4
4.3.2-5

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67407.json"

Debian:13 / rabbitmq-server

Package

Name
rabbitmq-server
Purl
pkg:deb/debian/rabbitmq-server?arch=source&distro=trixie

Affected ranges

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

Affected versions

4.*
4.0.5-6
4.0.5-6+deb13u1
4.0.5-6+deb13u2
4.0.5-8
4.0.5-9
4.0.5-10
4.0.5-11
4.0.5-12
4.0.5-13
4.0.5-14
4.3.0-1
4.3.0-2
4.3.0-3
4.3.2-1
4.3.2-2
4.3.2-3
4.3.2-4
4.3.2-5

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67407.json"

Debian:14 / rabbitmq-server

Package

Name
rabbitmq-server
Purl
pkg:deb/debian/rabbitmq-server?arch=source&distro=forky

Affected ranges

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

Affected versions

4.*
4.0.5-6
4.0.5-8
4.0.5-9
4.0.5-10
4.0.5-11
4.0.5-12
4.0.5-13
4.0.5-14
4.3.0-1
4.3.0-2
4.3.0-3
4.3.2-1
4.3.2-2
4.3.2-3
4.3.2-4
4.3.2-5

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67407.json"