{"cve":"CVE-2026-105699","nvd":{"published":"2026-10-05T21:16:35.410","modified":"2026-10-08T03:16:34.637","status":"Awaiting Analysis","description":"Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.6.8 until 1.9.1, Langflow authenticated access to the project identifier in a project-scoped MCP connection but did not authorize the resource URI supplied to resources/read. read_resource forwarded the attacker-controlled URI to handle_read_resource, which parsed a flow_id and filename and called storage_service.get_file without verifying that the flow belonged to the authenticated user or current project. A user with access to any project-scoped MCP endpoint could therefore request another user's flow-backed file, while global handle_list_resources and handle_list_tools behavior could disclose flow and file identifiers that made targeting easier. The vulnerability disclosed uploaded documents, structured data, prompts, and other private flow artifacts across tenants but did not modify victim files or stored flows. This issue is fixed in version 1.9.1.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":7.1},"cvss_v3":null,"cwes":["CWE-639"],"references":["https://github.com/langflow-ai/langflow/commit/b8fe970493fd5fb2e1fc71dfccc79f90b76058fa","https://github.com/langflow-ai/langflow/commit/f0fd436fe9829192ee550e6cb46961a01dd37032","https://github.com/langflow-ai/langflow/pull/12818","https://github.com/langflow-ai/langflow/releases/tag/v1.9.1","https://github.com/langflow-ai/langflow/security/advisories/GHSA-4hmc-cfm3-w43c"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-105699","score":0.00313,"percentile":0.23942,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4hmc-cfm3-w43c","url":"https://osv.dev/vulnerability/GHSA-4hmc-cfm3-w43c","summary":"Langflow has Authenticated Cross-Project File Disclosure via Unscoped MCP Resource Handlers","modified":"2026-10-15T14:56:20.801052430Z","packages":[{"ecosystem":"PyPI","name":"langflow","purl":"pkg:pypi/langflow","ranges":[">=1.6.8 <1.9.1"],"fixed":["1.9.1"]}]},{"id":"PYSEC-2026-4230","url":"https://osv.dev/vulnerability/PYSEC-2026-4230","summary":"Langflow has Authenticated Cross-Project File Disclosure via Unscoped MCP Resource Handlers","modified":"2026-10-15T14:45:08.145989636Z","packages":[{"ecosystem":"PyPI","name":"langflow","purl":"pkg:pypi/langflow","ranges":[">=1.6.8 <1.9.1"],"fixed":["1.9.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}