CVE-2026-104120 (GCVE-0-2026-104120)

Vulnerability from cvelistv5 – Published: 2026-10-02 02:15 – Updated: 2026-10-02 02:15
VLAI
Title
modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery
Summary
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.
Severity
6.9 (Medium)
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
7.3 (High)
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
7.3 (High)
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
CWE
  • CWE-918 - Server-Side Request Forgery
Assigner
References
URL Tags
https://vuldb.com/vuln/412764 vdb-entrytechnical-description
https://vuldb.com/vuln/412764/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-104120 third-party-advisory
https://vuldb.com/submit/960099 third-party-advisory
https://github.com/modelcontextprotocol/servers/i… exploitissue-tracking
https://github.com/modelcontextprotocol/servers/p… issue-trackingpatch
Impacted products
Vendor Product Version CPE status
modelcontextprotocol mcp-server-fetch Affected: 2026.6.0
Affected: 2026.6.1
Affected: 2026.6.2
Affected: 2026.6.3
Affected: 2026.6.4
    cpe:2.3:a:modelcontextprotocol:mcp-server-fetch:*:*:*:*:*:*:*:*
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modelcontextprotocol mcp-server-everything Affected: 2026.6.0
Affected: 2026.6.1
Affected: 2026.6.2
Affected: 2026.6.3
Affected: 2026.6.4
    cpe:2.3:a:modelcontextprotocol:mcp-server-everything:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
geochen (VulDB User) VulDB CNA Team
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{
  "containers": {
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      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:modelcontextprotocol:mcp-server-fetch:*:*:*:*:*:*:*:*"
          ],
          "modules": [
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          ],
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          "vendor": "modelcontextprotocol",
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              "version": "2026.6.0"
            },
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              "version": "2026.6.1"
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              "version": "2026.6.2"
            },
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              "version": "2026.6.4"
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            },
            {
              "status": "affected",
              "version": "2026.6.2"
            },
            {
              "status": "affected",
              "version": "2026.6.3"
            },
            {
              "status": "affected",
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          "type": "reporter",
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          "value": "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."
        }
      ],
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          "tags": [
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          "url": "https://vuldb.com/vuln/412764/cti"
        },
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          "name": "CVE-2026-104120 | CVE Analysis and Report",
          "tags": [
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          "tags": [
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          "url": "https://vuldb.com/submit/960099"
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          "url": "https://github.com/modelcontextprotocol/servers/issues/4492"
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          "url": "https://github.com/modelcontextprotocol/servers/pull/4890"
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          "time": "2026-10-01T02:00:00.000Z",
          "value": "VulDB entry created"
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          "lang": "en",
          "time": "2026-10-01T20:20:15.000Z",
          "value": "VulDB entry last update"
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      ],
      "title": "modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery",
      "x_generator": [
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      ]
    }
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  "cveMetadata": {
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    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-104120",
    "datePublished": "2026-10-02T02:15:18.514Z",
    "dateReserved": "2026-10-01T18:15:10.419Z",
    "dateUpdated": "2026-10-02T02:15:18.514Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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          }
        ],
        "id": "CVE-2026-104120",
        "lastModified": "2026-10-02T03:16:38.840",
        "metrics": {
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                "Recovery": "NOT_DEFINED",
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                "exploitMaturity": "PROOF_OF_CONCEPT",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
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                "valueDensity": "NOT_DEFINED",
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            "url": "https://vuldb.com/vuln/412764/cti"
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        "vulnStatus": "Received",
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    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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