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    CVE-2026-77811

    Improper input validation in the dashboards-observability plugin in OpenSearch Dashboards allows a remote authenticated user with write permissions to OpenSearch Dashboards saved objects to execute arbitrary JavaScript in the context of other users' browser sessions by uploading a saved asset with arbitrary web content.

    Published:Aug 21, 2026
    Last Modified:Aug 27, 2026
    EPS:Aug 21, 2026
    EPSS Score:0.00371
    CVSS Score:8.7

    Affected Products

    Vendor
    Aws
    Product
    Amazon Opensearch Service
    Vendor
    Opensearch
    Product
    Opensearch Dashboards
    Vendor
    Opensearch
    Product
    Opensearch Dashboards Dashboards-observability Plugin

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High