CVE-2026-103431

Collectl: collectl: colmux does not sanitize ansi/vt100 terminal escape sequences in data received from remote collectl instances

Published Oct 1, 2026 CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
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]).

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Collectl
Collectl collectl
Vendors & Products Collectl
Collectl collectl
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title collectl: collectl: colmux does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances Collectl: collectl: colmux does not sanitize ansi/vt100 terminal escape sequences in data received from remote collectl instances
References
Type Values Removed Values Added
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]).
Title collectl: collectl: colmux does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances
Weaknesses CWE-150
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N'}

threat_severity

Important

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Oct 1, 2026, 3:24 PM
Reserved
Sep 30, 2026, 3:19 PM
Status
Deferred
Published
Oct 1, 2026, 9:17 AM
Modified
Oct 1, 2026, 4:17 PM
Severity
Important
Public date
Sep 30, 2026, 3:26 PM