CVE-2026-77811
8.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| AWS | Amazon OpenSearch Service | 0 < 3.3 | unaffected |
| OpenSearch | OpenSearch Dashboards dashboards-observability plugin | 0 < 3.4 | affected |
| OpenSearch | OpenSearch Dashboards dashboards-observability plugin | 0 < 2.19.6 | affected |
Weaknesses
- CWE-79: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
References
- https://opensearch.org/artifacts/by-version/#release-3-4-0
- https://opensearch.org/artifacts/by-version/#release-2-19-6
- https://aws.amazon.com/security/security-bulletins/2026-088-aws/
- https://github.com/opensearch-project/dashboards-observability/security/advisories/GHSA-rmqx-r3wm-3px5
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