CVE-2026-104120
High
Description
A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.
SeverityHigh
CVSS7.3
Exploit probability—
ProductModelcontextprotocol Mcp-server-fetch
PublishedOct 2, 2026
First seenOct 2, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| modelcontextprotocol mcp-server-fetch | 2026.6.0, 2026.6.1, 2026.6.2, 2026.6.3, 2026.6.4 | — |
| modelcontextprotocol mcp-server-everything | 2026.6.0, 2026.6.1, 2026.6.2, 2026.6.3, 2026.6.4 | — |
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