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Related CVEsRelated VendorsRelated AssignersReports
1Vulnerabilities found
CVE-2026-42260
Assigner-GitHub, Inc.
ShareView Details
Assigner-GitHub, Inc.
CVSS Score-8.2||HIGH
EPSS-0.04% / 12.06%
||
7 Day CHG~0.00%
Published-12 May, 2026 | 14:09
Updated-14 May, 2026 | 20:17
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Open-WebSearch: SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

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.

Action-Not Available
Vendor-Aas-ee
Product-open-webSearch
CWE ID-CWE-918
Server-Side Request Forgery (SSRF)