CVE•Published 2026-09-08•Modified 2026-09-09•1 article on news•5 live references•NVD data
CVE-2026-84942
Vulnerability data via NVD (ingested)
CVSS v3.1
8.7
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
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.
Timeline
Published 2026-09-08
Modified 2026-09-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-84942Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-84942Censys host search filtered to this CVE id.
grep.app
CVE-2026-84942Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-84942GitHub code search for direct mentions.
Google dork
"CVE-2026-84942" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-84942 on GitHub.