What is CVE-2026-6327?

CVE-2026-6327 is a medium-severity vulnerability in IBM Concert, classified under Improper Output Neutralization for Logs. CVSS score: 4.3/10. Published 2026-09-23.

How severe is CVE-2026-6327?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in IBM Concert

CVE-2026-6327

IBM Concert 1.0.0 through 3.0.0 could allow an unauthorized user to inject data into log messages due to improper neutralization of special elements when written to log files.

Published 2026-09-23 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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.

Affected products

IBM Concert

Weakness classification (CWE)

CWE-117 — Improper Output Neutralization for Logs

References

www.ibm.com/support/pages/node/7288830 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-6327?: CVE-2026-6327 is a medium-severity vulnerability in IBM Concert, classified under Improper Output Neutralization for Logs. CVSS score: 4.3/10. Published 2026-09-23.
How severe is CVE-2026-6327?: Medium severity. CVSS v3 base score is 4.3 out of 10.