CVE-2026-49091

Improper Output Neutralization for Logs in Kibana Leading to Log Injection

State: Published
Severity: 8.0 High
Published: Jul 1, 2026
Updated: Jul 2, 2026
Reserved: May 27, 2026

Description

Improper Output Neutralization for Logs (CWE-117) in Kibana can lead to log injection via Log Injection-Tampering-Forging (CAPEC-93). An attacker can supply specially crafted input that is written to log files without proper neutralization. When the log files are subsequently viewed in a terminal that interprets control sequences, the injected content may alter the displayed log data.

Scores

CVSS	Score	Vector	Source
3.1	8.0 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H	elastic

Weaknesses

CWE-116 Improper Encoding or Escaping of Output

Affected Products

Product	Versions
KibanaElastic	8.0.0 through 8.11.0Affected 7.0.0 through 7.17.14Affected

References

https://discuss.elastic.co/t/kibana-7-17-15-8-11-1-security-update-esa-2026-53

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