{"id":"CVE-2026-42260","revision":"be8b1ac7e4014be796e5618f4826c94e","records":[{"revision":"be8b1ac7e4014be796e5618f4826c94e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-42260","aliases":[],"title":"Open-WebSearch: SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`","description":"Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF with the response body returned to the caller. This vulnerability is fixed in 2.1.7.","state":0,"publishedAt":"2026-05-12T14:09:05.888+00:00","modifiedAt":"2026-05-14T19:10:56.209+00:00","affected":[{"ecosystem":"Vendor product","name":"open-webSearch","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Aas-ee\",\n                    \"product\": \"open-webSearch\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.7\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/Aas-ee/open-webSearch/security/advisories/GHSA-v228-72c7-fx8j"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-42260","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-42260","identifiers":["CVE-2026-42260"]},"retained":false,"historicalAffected":[]}],"coverage":[]}