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1 vulnerability found for pdf-reader-mcp by SylphxAI

CVE-2026-62264 (GCVE-0-2026-62264)
Vulnerability from cvelistv5
Published
2026-10-30 18:32
Modified
2026-10-30 18:32
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-287 - Improper Authentication
  • CWE-306 - Missing Authentication for Critical Function
Summary
PDF Reader MCP is a Model Context Protocol server for reading PDF documents. In versions 2.2.0 and later prior to 3.0.1, when `MCP_TRANSPORT=http` enables the opt-in HTTP server, `@sylphx/pdf-reader-mcp` reads `MCP_API_KEY` and logs that `X-API-Key` authentication is enabled but never validates the `X-API-Key` header on incoming requests. The `/mcp` endpoint consequently accepts unauthenticated clients. With the default bind address of `0.0.0.0`, any client able to reach the port can invoke every PDF tool and read any PDF the server process can open on the host, despite the misleading authentication-enabled startup log. URL-based sources additionally permit limited server-side request forgery; private and loopback destinations are blocked by default unless `--allow-private-ips` is set. The default `stdio` transport is unaffected. This issue is fixed in version 3.0.1.
Impacted products
Vendor Product Version
SylphxAI pdf-reader-mcp Version: >= 2.2.0, < 3.0.1
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Show details on NVD website


{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "pdf-reader-mcp",
          "vendor": "SylphxAI",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.2.0, \u003c 3.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "PDF Reader MCP is a Model Context Protocol server for reading PDF documents. In versions 2.2.0 and later prior to 3.0.1, when `MCP_TRANSPORT=http` enables the opt-in HTTP server, `@sylphx/pdf-reader-mcp` reads `MCP_API_KEY` and logs that `X-API-Key` authentication is enabled but never validates the `X-API-Key` header on incoming requests. The `/mcp` endpoint consequently accepts unauthenticated clients. With the default bind address of `0.0.0.0`, any client able to reach the port can invoke every PDF tool and read any PDF the server process can open on the host, despite the misleading authentication-enabled startup log. URL-based sources additionally permit limited server-side request forgery; private and loopback destinations are blocked by default unless `--allow-private-ips` is set. The default `stdio` transport is unaffected. This issue is fixed in version 3.0.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T18:32:18.093Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84"
        },
        {
          "name": "https://github.com/SylphxAI/anymd/pull/332",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SylphxAI/anymd/pull/332"
        },
        {
          "name": "https://github.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c2"
        },
        {
          "name": "https://github.com/SylphxAI/anymd/tree/v3.0.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SylphxAI/anymd/tree/v3.0.1"
        }
      ],
      "source": {
        "advisory": "GHSA-q344-5v34-gm84",
        "discovery": "UNKNOWN"
      },
      "title": "PDF Reader MCP: HTTP transport accepts unauthenticated requests despite a configured MCP_API_KEY"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-62264",
    "datePublished": "2026-10-30T18:32:18.093Z",
    "dateReserved": "2026-07-13T17:09:57.574Z",
    "dateUpdated": "2026-10-30T18:32:18.093Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}