CVE-2026-104120modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery
Updated under an hour ago ()
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It affects modelcontextprotocol mcp-server-fetch and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.29%, higher than 20% of scored CVEs.
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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.
- CVSS
- 7.3 HIGH (v3.1, CNA)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
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.29% (percentile 20)
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
modelcontextprotocol mcp-server-fetch modelcontextprotocol:mcp-server-fetch | 2026.6.0; 2026.6.1; 2026.6.2; 2026.6.3; 2026.6.4 | CNA record |
modelcontextprotocol mcp-server-everything modelcontextprotocol:mcp-server-everything | 2026.6.0; 2026.6.1; 2026.6.2; 2026.6.3; 2026.6.4 | CNA record |
References
- https://vuldb.com/vuln/412764vdb-entry, technical-description
- https://vuldb.com/vuln/412764/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-104120third-party-advisory
- https://vuldb.com/submit/960099third-party-advisory
- https://github.com/modelcontextprotocol/servers/issues/4492exploit, issue-tracking
- https://github.com/modelcontextprotocol/servers/pull/4890issue-tracking, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.