GHSA-v228-72c7-fx8j
High · 8.2CVSS
8.2
EPSS
—
Published
May 5, 2026
CISA due date
—
The record
open-websearch has SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | open-websearch | 0 | 2.1.7 |
Related vulnerabilities
- CVE-2026-42260 Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search… Same vulnerability
- CVE-2026-113786 pypdf is a free and open-source pure-python PDF library. CWE-20
- CVE-2026-112081 A vulnerability was determined in hankcs HanLP up to 2.1.0-beta.64. CWE-20
- CVE-2026-111869 A vulnerability was identified in makeplane plane up to 1.4.2. CWE-20
- CVE-2026-100347 kin-openapi is a Go project for handling OpenAPI files. CWE-20
- CVE-2026-99999 In the Linux kernel, the following vulnerability has been resolved: ipv4: validate… CWE-20
- CVE-2026-107726 Hazelcast is a unified real-time data platform combining stream processing with a fast… CWE-20
- CVE-2026-105757 vLLM is an inference and serving engine for large language models. CWE-20