HIGH 8.5 NVD
CVE-2026-123784
Fluxbox through 1.3.7 contains an OS command injection vulnerability in RootTheme::reconfigTheme() that allows attackers to execute commands via crafted style b
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
- https://github.com/fluxbox/fluxbox
- https://github.com/fluxbox/fluxbox/blob/Release-1_3_7/src/RootTheme.cc#L192-L264
- https://github.com/fluxbox/fluxbox/commit/270bfbc28573037c9b8458488d193b219e33889f
- https://github.com/fluxbox/fluxbox/pull/89
- https://www.vulncheck.com/advisories/fluxbox-through-1.3.7-os-command-injection-via-style-
This high severity vulnerability with a CVSS score of 8.5 was published on 2026-11-06 via NVD.
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