CVE-2026-42401
Improper Neutralization of Input During Web Page Generation in Kibana Leading to Stored HTML Injection
CVSS Score
4.1
EPSS Score
0.0%
EPSS Percentile
9th
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.
| CWE | CWE-79 |
| Vendor | elastic |
| Product | kibana |
| Published | May 28, 2026 |
| Last Updated | May 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
Elastic / Kibana
9.0.0 ≤ 9.3.4 8.0.0 ≤ 8.19.15