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CVE-2026-42401

Published: May 28, 2026Updated: May 29, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
4.1CVSSMEDIUM
EPSS Score
0.1%
Top 96.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user's browser session.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

KibanaElasticDatabases
kibanaelasticDatabases
elasticcommercialUSDatabasesaka elasticsearch co., elastic.co

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-security-update-esa-2026-34/386552
discuss.elastic.co

Timeline

Published
May 28, 2026
Last Updated
May 29, 2026

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