modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery
Published Oct 2, 2026
6.9
MEDIUMCVSS 4.0
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.
Affected products
-
- Version 2026.6.0StatusaffectedConstraints-
- Version 2026.6.1StatusaffectedConstraints-
- Version 2026.6.2StatusaffectedConstraints-
- Version 2026.6.3StatusaffectedConstraints-
- Version 2026.6.4StatusaffectedConstraints-
- Version
-
- Version 2026.6.0StatusaffectedConstraints-
- Version 2026.6.1StatusaffectedConstraints-
- Version 2026.6.2StatusaffectedConstraints-
- Version 2026.6.3StatusaffectedConstraints-
- Version 2026.6.4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Modelcontextprotocol | Mcp-Server-Everything | n/a |
| ||||||||||||||||||
| Modelcontextprotocol | Mcp-Server-Fetch | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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/E:P
1 other source (NVD) ▾
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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
1 other source (NVD) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C
1 other source (NVD) ▾
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
No EPSS score for this CVE.
References (6)
- https://github.com/modelcontextprotocol/servers/issues/4492 exploitissue-tracking
- https://github.com/modelcontextprotocol/servers/pull/4890 issue-trackingpatch
- https://vuldb.com/cve/CVE-2026-104120 third-party-advisory
- https://vuldb.com/submit/960099 third-party-advisory
- https://vuldb.com/vuln/412764 vdb-entrytechnical-description
- https://vuldb.com/vuln/412764/cti signaturepermissions-required
| Link | Providers | Tags |
|---|---|---|
| https://github.com/modelcontextprotocol/servers/issues/4492 | exploitissue-tracking | |
| https://github.com/modelcontextprotocol/servers/pull/4890 | issue-trackingpatch | |
| https://vuldb.com/cve/CVE-2026-104120 | third-party-advisory | |
| https://vuldb.com/submit/960099 | third-party-advisory | |
| https://vuldb.com/vuln/412764 | vdb-entrytechnical-description | |
| https://vuldb.com/vuln/412764/cti | signaturepermissions-required |
Change history (0)
No recorded changes yet.