CVE-2026-42401: Improper Neutralization of Input During Web Page Generation in Kibana Leading to Stored HTML Injection
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-42401?
The severity of CVE-2026-42401 is medium with a score of 4.1.
How does CVE-2026-42401 exploit happen?
CVE-2026-42401 exploits occur due to improper neutralization of input during web page generation in Kibana, allowing for stored HTML injection.
What are the potential impacts of CVE-2026-42401?
The potential impacts of CVE-2026-42401 include stored HTML injection that could affect users viewing the Kibana interface.
Who is affected by CVE-2026-42401?
Users with write access to an Elasticsearch index in Kibana can exploit CVE-2026-42401 to inject malicious input.
How can I mitigate CVE-2026-42401?
To mitigate CVE-2026-42401, ensure that proper input validation and output encoding are implemented in your Kibana configurations.