CVE-2026-123785
Received Received - Intake

Fluxbox Infinite Loop via Menu Title Height

Publication date: 2026-11-06

Last updated on: 2026-11-06

Assigner: VulnCheck

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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Meta Information

Published
2026-11-06
Last Modified
2026-11-06
Generated
2026-11-06
EPSS Evaluated
N/A
NVD
CVE-2026-123785
EUVD
EUVD-2026-118303

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
fluxbox fluxbox From 0 (inc) to 1.3.7 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-835 The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

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