CVE-2026-104120

medium

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.

References

https://vuldb.com/vuln/412764/cti

https://vuldb.com/vuln/412764

https://vuldb.com/submit/960099

https://vuldb.com/cve/CVE-2026-104120

https://github.com/modelcontextprotocol/servers/pull/4890

https://github.com/modelcontextprotocol/servers/issues/4492

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91161

Details

Source: Mitre, NVD

Published: 2026-10-02

Updated: 2026-10-06

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 7.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Severity: High

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00288