CVE-2026-49091 Details
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.
A log injection vulnerability has been identified in Elastic Kibana versions 7.17.14 and prior, as well as in versions 8.0.0 through 8.11.0. This vulnerability arises from improper output neutralization for logs, allowing an attacker to inject specially crafted input that is written to log files without adequate sanitization. When these log files are viewed in a terminal that interprets control sequences, the injected content can manipulate the displayed log data.
Users can upgrade to Kibana versions 7.17.15 or 8.11.1, where this vulnerability has been addressed. For those who cannot upgrade, it is recommended to view Kibana log files in tools that do not interpret terminal control sequences. This guidance also applies to Elastic Cloud Hosted deployments.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://discuss.elastic.co/t/kibana-7-17-15-8-11-1-security-update-esa-2026-53 | [email protected] | Vendor AdvisoryMitigation |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-116 | Improper Encoding or Escaping of Output | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| elastic kibana | >= 7.0.0, < 7.17.15 >= 8.0.0, < 8.11.1 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 2, 2026 | Initial Analysis | [email protected] |
| Jul 2, 2026 | CVE Modified | CISA-ADP |
| Jul 1, 2026 | CVE Modified | CISA-ADP |
| Jul 1, 2026 | New CVE Received | [email protected] |