CVE-2026-123785

CVE-2026-123785CVE-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.

Scoring

CVSS 5.5 ()
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Last modified2026-11-06
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.