{"id":"CVE-2026-77811","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-77811","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…","details":"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":"2026-08-21T21:17:08.903","modified":"2026-08-21T21:17:08.903","cvss":{"score":8.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://aws.amazon.com/security/security-bulletins/2026-088-aws/"},{"type":"WEB","url":"https://github.com/opensearch-project/dashboards-observability/security/advisories/GHSA-rmqx-r3wm-3px5"},{"type":"WEB","url":"https://opensearch.org/artifacts/by-version/#release-2-19-6"},{"type":"WEB","url":"https://opensearch.org/artifacts/by-version/#release-3-4-0"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-21T21:17:08.903"}}