CVE-2026-105741 (GCVE-0-2026-105741)
Vulnerability from cvelistv5
Published
2026-10-05 20:56
Modified
2026-10-06 16:43
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
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.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| langflow-ai | langflow |
Version: >= 1.5.0, < 1.10.3 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-105741",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-06T16:42:30.466213Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-06T16:43:02.046Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "langflow",
"vendor": "langflow-ai",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.5.0, \u003c 1.10.3"
}
]
}
],
"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\u0027s filesystem. This vulnerability is fixed in 1.10.3."
}
],
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-290",
"description": "CWE-290: Authentication Bypass by Spoofing",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-345",
"description": "CWE-345: Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-05T20:56:00.060Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"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"
}
],
"source": {
"advisory": "GHSA-4f6c-2vvp-gw82",
"discovery": "UNKNOWN"
},
"title": "Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-105741",
"datePublished": "2026-10-05T20:56:00.060Z",
"dateReserved": "2026-10-05T19:11:07.946Z",
"dateUpdated": "2026-10-06T16:43:02.046Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"cna\": {\"title\": \"Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write\", \"source\": {\"advisory\": \"GHSA-4f6c-2vvp-gw82\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"langflow-ai\", \"product\": \"langflow\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 1.5.0, \u003c 1.10.3\"}]}], \"references\": [{\"url\": \"https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82\", \"name\": \"https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/langflow-ai/langflow/pull/13915\", \"name\": \"https://github.com/langflow-ai/langflow/pull/13915\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72\", \"name\": \"https://github.com/langflow-ai/langflow/commit/1f39a4b9d62c9dfa1b21fa7f85e23a180c351b72\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639\", \"name\": \"https://github.com/langflow-ai/langflow/commit/94859df33acd70b2a1f816e26d68f5e89a7e5639\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/langflow-ai/langflow/releases/tag/v1.10.3\", \"name\": \"https://github.com/langflow-ai/langflow/releases/tag/v1.10.3\", \"tags\": [\"x_refsource_MISC\"]}], \"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\u0027s filesystem. This vulnerability is fixed in 1.10.3.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-290\", \"description\": \"CWE-290: Authentication Bypass by Spoofing\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-345\", \"description\": \"CWE-345: Insufficient Verification of Data Authenticity\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-10-05T20:56:00.060Z\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-105741\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-06T16:42:30.466213Z\"}}}], \"references\": [{\"url\": \"https://github.com/langflow-ai/langflow/security/advisories/GHSA-4f6c-2vvp-gw82\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-10-06T16:42:47.378Z\"}}]}",
"cveMetadata": "{\"cveId\": \"CVE-2026-105741\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-05T20:56:00.060Z\", \"dateReserved\": \"2026-10-05T19:11:07.946Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-10-05T20:56:00.060Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…