CVE-2026-77811

Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards

Published Aug 21, 2026 CVSS 4.0 · 6.2 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Opensearch opensearch Dashboards
Vendors & Products Opensearch opensearch Dashboards
Type Values Removed Values Added
References
Metrics cvssV4_0

{'score': 6.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H'}

cvssV4_0

{'score': 6.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N'}

Type Values Removed Values Added
Description 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.
Title Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards
First Time appeared Aws
Aws amazon Opensearch Service
Opensearch
Opensearch opensearch Dashboards Dashboards-observability Plugin
Weaknesses CWE-79
CPEs cpe:2.3:a:aws:amazon_opensearch_service:*:*:*:*:*:*:*:*
cpe:2.3:a:opensearch:opensearch_dashboards_dashboards-observability_plugin:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws amazon Opensearch Service
Opensearch
Opensearch opensearch Dashboards Dashboards-observability Plugin
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}

cvssV4_0

{'score': 6.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
AMZN
Published
Updated
Aug 27, 2026, 4:46 PM
Reserved
Aug 21, 2026, 1:59 PM
Status
Awaiting Analysis
Published
Aug 21, 2026, 9:17 PM
Modified
Oct 14, 2026, 7:10 PM