Status: NEW | Advisory ID: CVE-2026-84942
| CVE | CVE-2026-84942 |
| CVSS Score / Version | 8.7 (High) / CVSS v3.1 |
| Updated | 2026-09-09 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is low; user interaction is required; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is none. |
| Classified as | CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) |
Improper input validation in the Vega expression function implementation in OpenSearch Dashboards allows a remote authenticated actor with dashboard write permissions to execute arbitrary JavaScript in the context of other users' browser sessions by saving a crafted Vega visualization. The checkForFunctionProperty validation routine failed to recurse into arrays of objects, allowing a function property nested inside an array to bypass validation. (NVD)
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-84942 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-84942 |