{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105741", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-05T19:11:07.946Z", "datePublished": "2026-10-05T20:56:00.060Z", "dateUpdated": "2026-10-05T20:56:00.060Z"}, "containers": {"cna": {"title": "Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write", "problemTypes": [{"descriptions": [{"cweId": "CWE-290", "lang": "en", "description": "CWE-290: Authentication Bypass by Spoofing", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82"}, {"name": "https://github.com/langflow-ai/langflow/pull/13915", "tags": ["x_refsource_MISC"], "url": "https://github.com/langflow-ai/langflow/pull/13915"}, {"name": "https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72", "tags": ["x_refsource_MISC"], "url": "https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72"}, {"name": "https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639", "tags": ["x_refsource_MISC"], "url": "https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639"}, {"name": "https://github.com/langflow-ai/langflow/releases/tag/v1.10.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/langflow-ai/langflow/releases/tag/v1.10.3"}], "affected": [{"vendor": "langflow-ai", "product": "langflow", "versions": [{"version": ">= 1.5.0, < 1.10.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-05T20:56:00.060Z"}, "descriptions": [{"lang": "en", "value": "Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.5.0 until 1.10.3, an IP spoofing vulnerability in the Model Context Protocol (MCP) configuration installation endpoint (POST /api/v1/mcp/project/{project_id}/install) allowed authenticated remote attackers to bypass the \"local-only\" access restriction. By sending a spoofed X-Forwarded-For: 127.0.0.1 header, an attacker could make the server treat the request as originating from localhost, letting them write/overwrite an MCP client configuration file on the server's filesystem. This vulnerability is fixed in 1.10.3."}], "source": {"advisory": "GHSA-4f6c-2vvp-gw82", "discovery": "UNKNOWN"}}}}

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{"affected": [{"affectedData": [{"product": "langflow", "vendor": "langflow-ai", "versions": [{"status": "affected", "version": ">= 1.5.0, < 1.10.3"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.5.0 until 1.10.3, an IP spoofing vulnerability in the Model Context Protocol (MCP) configuration installation endpoint (POST /api/v1/mcp/project/{project_id}/install) allowed authenticated remote attackers to bypass the \"local-only\" access restriction. By sending a spoofed X-Forwarded-For: 127.0.0.1 header, an attacker could make the server treat the request as originating from localhost, letting them write/overwrite an MCP client configuration file on the server's filesystem. This vulnerability is fixed in 1.10.3."}], "id": "CVE-2026-105741", "lastModified": "2026-10-05T21:16:35.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-05T21:16:35.740", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72"}, {"source": "security-advisories@github.com", "url": "https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639"}, {"source": "security-advisories@github.com", "url": "https://github.com/langflow-ai/langflow/pull/13915"}, {"source": "security-advisories@github.com", "url": "https://github.com/langflow-ai/langflow/releases/tag/v1.10.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}, {"lang": "en", "value": "CWE-345"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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