Dashboard / CVE-2026-123784

CVE-2026-123784

HIGH
MEDIUM Priority: 0.06 BB Relevance: 42/100
Published: 2026-11-06 Modified: 2026-11-12 First seen: 2026-11-06 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: None
VC: High
VI: High
VA: High

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
fluxbox fluxbox 0
fluxbox fluxbox 0

References & Advisories (5)

Bug Bounty Relevance

42 / 100
✓ No authentication
✓ Low complexity

CVSS Score

8.5 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.71%
Raw Score 0.007080
Percentile 54.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00708
2026-11-12
0.00708
2026-11-10
0.00708
2026-11-09
0.00708
2026-11-08
0.00708
2026-11-07
0.00708

Intelligence Sources

mitre ref →
nvd ref →

External Links