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CVE-2026-103431

colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data…

Risk score
48/100
CVSS
7.7 v3.1
Exploit chance (30 days)
0.2%
Published
1 Oct 2026

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What to know

What it is
colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0]).
Affected
See advisory
Fix
Upgrade the product to 4.3.20.2 or later.
Exploitation
No known exploitation

Why it is Yellow

  • CVSS 7.7 high

References

Original description

colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0]).

Last activity 1 Oct 2026. Patch Forecast updates every hour.