PT-2026-138074

CVE-2026-123784

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Published

2026-11-06

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Updated

2026-11-06

Description by

CVSS 3.1
7.8
High
MetricsAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-78: Improper Neutralization of Special Elements used in an OS Command (\'OS Command Injection\')
Related identifiers
CVE-2026-123784
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