CVE-2026-104120: modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery
modelcontextprotocol · mcp-server-fetch
Vendor fix available · Affected: modelcontextprotocol mcp-server-fetch · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 21% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- modelcontextprotocol · mcp-server-fetch2026.6.0; 2026.6.1; 2026.6.2; 2026.6.3; 2026.6.4
- modelcontextprotocol · mcp-server-everything2026.6.0; 2026.6.1; 2026.6.2; 2026.6.3; 2026.6.4
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Server-Side Request Forgery
- Vendor
- modelcontextprotocol
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-104120 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.