What is CVE-2026-103431?

CVE-2026-103431 is a high-severity vulnerability, classified under CWE-150. CVSS score: 7.7/10. Published 2026-10-01.

How severe is CVE-2026-103431?

High severity. CVSS v3 base score is 7.7 out of 10.

CVE-2026-103431

CVE-2026-103431

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]).

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-150

References

access.redhat.com/security/cve/CVE-2026-103431 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-103431?: CVE-2026-103431 is a high-severity vulnerability, classified under CWE-150. CVSS score: 7.7/10. Published 2026-10-01.
How severe is CVE-2026-103431?: High severity. CVSS v3 base score is 7.7 out of 10.