CVE-2026-42260
High · 8.2CVSS
8.2
EPSS
0.4%
Published
May 12, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | open-websearch | 0 | 2.1.7 |
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