{"cve":"CVE-2026-105698","nvd":{"published":"2026-10-05T21:16:35.257","modified":"2026-10-06T14:59:48.280","status":"Awaiting Analysis","description":"Langflow is a tool for building and deploying AI-powered agents and workflows. From 1.0.0 until 1.10.1, Langflow did not verify flow ownership in the deprecated POST /api/v1/build/{flow_id}/vertices and POST /api/v1/build/{flow_id}/vertices/{vertex_id} handlers. Through version 1.7.1, an unauthenticated caller who knew another user's flow UUID could reach these handlers; from version 1.7.2 through 1.10.0, callers had to authenticate but needed no elevated privileges. Such a caller could cause retrieve_vertices_order to load and cache the private graph, enumerate its vertex identifiers, and use build_vertex to execute selected vertices and receive their results. build_graph_from_db_no_cache performed a primary-key lookup without an owner filter. This could disclose private flow structure, configured values, and selected outputs and could trigger victim-configured side effects and build-history records, although it did not expose the victim's variable-store credentials or permit modification of the stored flow. This issue is fixed in Langflow 1.10.1 and langflow-base 0.10.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-639","CWE-862"],"references":["https://github.com/langflow-ai/langflow/commit/fb3d6ec90b1e4d52eaa40915a64b1f86b6542f55","https://github.com/langflow-ai/langflow/pull/13153","https://github.com/langflow-ai/langflow/releases/tag/v1.10.1","https://github.com/langflow-ai/langflow/security/advisories/GHSA-gh98-4phw-6fmw","https://github.com/langflow-ai/langflow/security/advisories/GHSA-gh98-4phw-6fmw"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-105698","score":0.00225,"percentile":0.13108,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-gh98-4phw-6fmw","url":"https://osv.dev/vulnerability/GHSA-gh98-4phw-6fmw","summary":"Langflow : Cross-user flow access and vertex execution via deprecated /api/v1/build/{flow_id}/vertices endpoints","modified":"2026-10-15T14:56:14.908470119Z","packages":[{"ecosystem":"PyPI","name":"langflow","purl":"pkg:pypi/langflow","ranges":[">=1.0.0 <1.10.1"],"fixed":["1.10.1"]},{"ecosystem":"PyPI","name":"langflow-base","purl":"pkg:pypi/langflow-base","ranges":["<0.10.1"],"fixed":["0.10.1"]}]},{"id":"PYSEC-2026-4234","url":"https://osv.dev/vulnerability/PYSEC-2026-4234","summary":"Langflow : Cross-user flow access and vertex execution via deprecated /api/v1/build/{flow_id}/vertices endpoints","modified":"2026-10-15T14:56:14.908470119Z","packages":[{"ecosystem":"PyPI","name":"langflow","purl":"pkg:pypi/langflow","ranges":[">=1.0.0 <1.10.1"],"fixed":["1.10.1"]}]},{"id":"PYSEC-2026-4238","url":"https://osv.dev/vulnerability/PYSEC-2026-4238","summary":"Langflow : Cross-user flow access and vertex execution via deprecated /api/v1/build/{flow_id}/vertices endpoints","modified":"2026-10-15T14:56:14.908470119Z","packages":[{"ecosystem":"PyPI","name":"langflow-base","purl":"pkg:pypi/langflow-base","ranges":["<0.10.1"],"fixed":["0.10.1"]}]}],"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."]}