CVE-2026-103431
High
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]).
SeverityHigh
CVSS7.7
Exploit probability—
ProductCollectl
PublishedOct 1, 2026
First seenOct 1, 2026
Weakness typeCWE-150CWE-150
How to fix
Update
- collectl4.3.20.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| collectl | v < 4.3.20.3 | 4.3.20.3 |
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