CVE-2026-77811

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.

CVSS Vector

References

• https://aws.amazon.com/security/security-bulletins/2026-088-aws/
• https://github.com/opensearch-project/dashboards-observability/security/advisories/GHSA-rmqx-r3wm-3px5
• https://opensearch.org/artifacts/by-version/#release-2-19-6
• https://opensearch.org/artifacts/by-version/#release-3-4-0