{"id":"CVE-2026-18952","aliases":["EUVD-2026-57422","GHSA-w946-8jxc-6v3m"],"status":"published","title":"Missing Input Validation in Threat Intel Feed Parser in OpenSearch Security Analytics Plugin","description":"Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00519,"percentile":0.44392,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-08-12T18:42:38Z","modified":"2026-10-28T02:30:28Z","products":[{"vendor":"aws","product":"opensearch"},{"vendor":"github","product":"opensearch"},{"vendor":"opensearch","product":"opensearch"}],"references":[{"url":"https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html","tags":["patch","fix"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-079-aws/","tags":["vendor-advisory","release-notes","advisory"]},{"url":"https://github.com/opensearch-project/security-analytics/security/advisories/GHSA-w946-8jxc-6v3m","tags":["release-notes","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18952.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18952","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-18952","title":"Missing Input Validation in Threat Intel Feed Parser in OpenSearch Security Analytics Plugin","description":"Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.","status":"published","published":"2026-08-12T18:42:38.633Z","modified":"2026-08-21T18:22:28.717Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:20:12.60856Z"}],"euvd":[{"id":"EUVD-2026-57422","description":"Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.","status":"published","published":"2026-08-12T18:42:38Z","modified":"2026-08-21T18:22:28Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:37.198267Z"}],"nvd":[{"id":"CVE-2026-18952","description":"Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.","status":"published","published":"2026-08-12T19:17:31.507Z","modified":"2026-08-21T19:17:00.96Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/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":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:37.217486Z"}],"osv":[{"id":"CVE-2026-18952","title":"Missing Input Validation in Threat Intel Feed Parser in OpenSearch Security Analytics Plugin","description":"Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.","status":"published","published":"2026-08-12T18:42:38.633Z","modified":"2026-10-28T02:30:28.539395726Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:44:58.024074Z"}]}}