{"id":"CVE-2026-77811","aliases":["EUVD-2026-64129","GHSA-rmqx-r3wm-3px5"],"status":"published","title":"Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards","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.","severity":{"version":"4.0","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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00518,"percentile":0.44524,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-08-21T20:09:19Z","modified":"2026-10-28T02:30:47Z","products":[{"vendor":"aws","product":"amazon opensearch service"},{"vendor":"opensearch","product":"opensearch dashboards dashboards-observability plugin"}],"references":[{"url":"https://opensearch.org/artifacts/by-version/#release-3-4-0","tags":["patch","fix"]},{"url":"https://opensearch.org/artifacts/by-version/#release-2-19-6","tags":["patch","fix"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-088-aws/","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/opensearch-project/dashboards-observability/security/advisories/GHSA-rmqx-r3wm-3px5","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77811.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77811","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-77811","title":"Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards","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.","status":"published","published":"2026-08-21T20:09:19.151Z","modified":"2026-08-27T16:46:19.625Z","cvss":[{"version":"4.0","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","level":"medium","assessor":"cna"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:15.712761Z"}],"euvd":[{"id":"EUVD-2026-64129","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.","status":"published","published":"2026-08-21T20:09:19Z","modified":"2026-08-27T16:46:19Z","cvss":[{"version":"4.0","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","level":"medium"}],"updated_at":"2026-11-02T18:01:27.27583Z"}],"nvd":[{"id":"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.","status":"published","published":"2026-08-21T21:17:08.903Z","modified":"2026-10-14T19:10:00.297Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:40.665005Z"}],"osv":[{"id":"CVE-2026-77811","title":"Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards","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.","status":"published","published":"2026-08-21T20:09:19.151Z","modified":"2026-10-28T02:30:47.028772001Z","cvss":[{"version":"4.0","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","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:17.44708Z"}]}}