CVE-2026-6327
Received Received - Intake

Log Injection Vulnerability in IBM Concert

Vulnerability report for CVE-2026-6327, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: IBM Corporation

Description

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.

CVSS Scores

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Meta Information

Published
2026-09-23
Last Modified
2026-09-23
Generated
2026-09-23
AI Q&A
2026-09-23
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ibm concert From 1.0.0 (inc) to 3.0.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-117 The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.

Attack-Flow Graph

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Executive Summary

IBM Concert versions 1.0.0 through 3.0.0 are vulnerable to unauthorized data injection into log messages. This occurs because the software fails to properly neutralize special elements when writing to log files, allowing attackers to inject malicious data.

Detection Guidance

This vulnerability involves unauthorized data injection into log files. Detection requires reviewing log files for unusual or unexpected entries that may indicate tampering. Check IBM Concert log directories for files with unexpected content or timestamps. Look for logs containing special characters or payloads that do not match normal application behavior.

Impact Analysis

This vulnerability could allow attackers to manipulate log files, potentially obscuring malicious activity or creating false entries. It may lead to incorrect system behavior, audit failures, or difficulty in detecting real security incidents.

Compliance Impact

This vulnerability could impact compliance by compromising the integrity of audit logs, which are critical for demonstrating adherence to regulations like GDPR and HIPAA. Tampered logs may fail audits or legal requirements for accurate record-keeping.

Mitigation Strategies

Update IBM Concert to the latest version beyond 3.0.0 to address the improper log injection vulnerability. Review and restrict user permissions to prevent unauthorized access to log files. Monitor logs for suspicious entries that may indicate exploitation attempts.

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