Search threats, CVEs… ⌘K
Back to vendor advisories
AWS Security BulletinsCVE-2026-84942

CVE-2026-84942 - Stored Cross-Site Scripting via Vega Expression Function Bypass in OpenSearch Dashboards

Severity not listed 1 CVE Published Oct 25, 2026 at 3:11 AM UTC

Summary

Read this article

Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Affedted products & versions: OpenSearch Dashboards (open-source, self-managed): - Affected: v2.0.0, v2.1.0, v2.2.0, v2.3.0, v2.4.0, v2.5.0, v.2.6.0, v2.7.0, v2.8.0, v2.9.0, v2.10.0, v2.11.0, v2.12.0, v2.13.0, v2.14.0, v2.15.0, v2.16.0, v2.17.0, v2.18.0, v2.19.0, v3.0.0, v3.1.0, v3.2.0, v3.3.0, v3.4.0, v3.5.0 - Fixed: v2.19.5 and v3.6.0 Amazon OpenSearch Service (AWS Managed): - Affected: v2.3.0, v2.5.0, v2.7.0, v2.9.0, v2.11.0, v2.13.0, v2.15.0, v2.17.0, v2.19.0, v3.1.0, v3.3.0, v3.5.0 - Fixed: v2.3.0, v2.5.0, v2.7.0, v2.9.0, v2.11.0, v2.13.0, v2.15.0, v2.17.0, v2.19.0 and v3.1.0, v3.3.0, v3.5.0 Amazon OpenSearch Serverless: - Not affected Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

CVEs in this advisory 1

CVE-2026-84942
Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • The vendor changed the advisory's last-updated date.
    • The vendor changed the advisory summary.
    • The vendor changed the advisory's last-updated date.
    • The vendor changed the advisory's last-updated date.

Updates

  1. Added to SecurityAlert

    We collected the advisory from the official source.

  2. Published by AWS

    The publication date reported by the vendor.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Keep investigating
See every advisory from this vendor