CVE-2026-77811Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards
Updated under an hour ago ()
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It affects AWS Amazon OpenSearch Service and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- AMZN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
AWS Amazon OpenSearch Service aws:amazon_opensearch_service (from the name) | before 3.3 not affected | CNA record |
OpenSearch OpenSearch Dashboards dashboards-observability plugin opensearch:dashboards_dashboards_observability_plugin (from the name) | before 3.4; before 2.19.6 | CNA record |
References
- https://opensearch.org/artifacts/by-version/#release-3-4-0patch
- https://opensearch.org/artifacts/by-version/#release-2-19-6patch
- https://aws.amazon.com/security/security-bulletins/2026-088-aws/vendor-advisory
- https://github.com/opensearch-project/dashboards-observability/security/advisories/GHSA-rmqx-r3wm-3px5third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.