Medium severity5.5NVD Advisory· Published Nov 6, 2026

CVE-2026-123785

Description

Fluxbox through 1.3.7 contains an infinite loop vulnerability in Menu::updateMenu() in src/FbTk/Menu.cc that allows attackers to hang the window manager via crafted style geometry values. Attackers can supply a style with an oversized unbounded menu.titleHeight so the column loop never terminates, causing sustained CPU use and denial of service at startup.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Fluxbox Team/Fluxbotllm-fuzzy
Range: <=1.3.7

Patches

Vulnerability mechanics

References

github.com/fluxbox/fluxbox/blob/Release-1_3_7/src/FbTk/Menu.ccnvd
github.com/fluxbox/fluxbox/pull/90nvd
www.vulncheck.com/advisories/fluxbox-through-1.3.7-infinite-loop-via-menu-updatemenu-style-geometrynvd

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000