Improper Output Neutralization for Logs in Kibana Leading to Log Injection

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Summary

CVECVE-2026-49091
StatePUBLISHED
Assignerelastic
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-01 18:16:34 UTC
Updated2026-07-02 18:15:39 UTC
DescriptionImproper 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.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS: 0.002010000 probability, percentile 0.100830000 (date 2026-07-04)

Problem Types: CWE-116 | CWE-116 CWE-116 Improper Encoding or Escaping of Output

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
3.1CNACVSS8HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Elastic Kibana All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Elastic Kibana affected 8.0.0 8.11.0 semver Not specified
CNA Elastic Kibana affected 7.0.0 7.17.14 semver Not specified

References

ReferenceSourceLinkTags
discuss.elastic.co/t/kibana-7-17-15-8-11-1-security-update-esa-2026-53 [email protected] discuss.elastic.co Vendor Advisory, Mitigation
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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