{"id":"CVE-2026-62264","state":"PUBLISHED","title":"PDF Reader MCP: HTTP transport accepts unauthenticated requests despite a configured MCP_API_KEY","description":"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.","publishedAt":"2026-10-30T18:32:18.093Z","updatedAt":"2026-10-30T18:32:18.093Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["SylphxAI pdf-reader-mcp"],"affected":[{"vendor":"SylphxAI","product":"pdf-reader-mcp","versions":[{"version":">= 2.2.0, < 3.0.1","status":"affected"}]}],"references":["https://github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84","https://github.com/SylphxAI/anymd/pull/332","https://github.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c2","https://github.com/SylphxAI/anymd/tree/v3.0.1"],"weaknesses":["CWE-200","CWE-287","CWE-306"],"ingestedAt":"2026-10-30T18:40:06.088Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/62xxx/CVE-2026-62264.json","commit":"7c60edf882a89f07fcce8b786bfad034e7ddeecb","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-62264","state":"PUBLISHED","datePublished":"2026-10-30T18:32:18.093Z","dateUpdated":"2026-10-30T18:32:18.093Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-13T17:09:57.574Z"},"containers":{"cna":{"title":"PDF Reader MCP: HTTP transport accepts unauthenticated requests despite a configured MCP_API_KEY","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."}],"affected":[{"vendor":"SylphxAI","product":"pdf-reader-mcp","versions":[{"version":">= 2.2.0, < 3.0.1","status":"affected"}]}],"references":[{"url":"https://github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84","name":"https://github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/SylphxAI/anymd/pull/332","name":"https://github.com/SylphxAI/anymd/pull/332","tags":["x_refsource_MISC"]},{"url":"https://github.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c2","name":"https://github.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c2","tags":["x_refsource_MISC"]},{"url":"https://github.com/SylphxAI/anymd/tree/v3.0.1","name":"https://github.com/SylphxAI/anymd/tree/v3.0.1","tags":["x_refsource_MISC"]}],"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","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-30T18:32:18.093Z"},"source":{"advisory":"GHSA-q344-5v34-gm84","discovery":"UNKNOWN"}}}}}