DEBIAN-CVE-2026-123784

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Source
https://security-tracker.debian.org/tracker/CVE-2026-123784
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123784.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-123784
Upstream
Published
2026-11-06T15:17:21Z
Modified
2026-11-07T05:00:08Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Fluxbox through 1.3.7 contains an OS command injection vulnerability in RootTheme::reconfigTheme() that allows attackers to execute commands via crafted style background values. Attackers can embed shell metacharacters in background pixmap paths, random directories, or gradient texture text, which are concatenated unescaped into an fbsetbg command run via $SHELL -c when the style loads.

References

Affected packages

Debian:12 / fluxbox

Package

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

Affected ranges

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

Affected versions

1.*
1.3.5-2.1
1.3.6-1~exp1
1.3.7-1~exp1
1.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123784.json"

Debian:13 / fluxbox

Package

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

Affected ranges

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

Affected versions

1.*
1.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123784.json"

Debian:14 / fluxbox

Package

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

Affected ranges

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

Affected versions

1.*
1.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123784.json"