{"cve":"CVE-2026-6596","nvd":{"published":"2026-04-20T03:16:16.967","modified":"2026-06-17T11:01:02.813","status":"Deferred","description":"A security flaw has been discovered in langflow-ai langflow up to 1.1.0. This issue affects the function create_upload_file of the file src/backend/base/Langflow/api/v1/endpoints.py of the component API Endpoint. The manipulation results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","score":5.5},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","score":7.3},"cwes":["CWE-284","CWE-434"],"references":["https://gist.github.com/chenhouser2025/c2aabfdee41009cfe45d28a9924742a0","https://vuldb.com/submit/791919","https://vuldb.com/vuln/358231","https://vuldb.com/vuln/358231/cti"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-6596","score":0.00284,"percentile":0.20992,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vvfc-fp59-m92g","url":"https://osv.dev/vulnerability/GHSA-vvfc-fp59-m92g","summary":"Langflow: DoS Through Lack of File Size Restriction via Deprecated Unauthenticated File Upload API","modified":"2026-07-13T16:43:24.520952172Z","packages":[{"ecosystem":"PyPI","name":"langflow-base","purl":"pkg:pypi/langflow-base","ranges":["<0.9.1"],"fixed":["0.9.1"]}]},{"id":"PYSEC-2026-2572","url":"https://osv.dev/vulnerability/PYSEC-2026-2572","summary":"Langflow: DoS Through Lack of File Size Restriction via Deprecated Unauthenticated File Upload API","modified":"2026-07-13T16:32:01.231605372Z","packages":[{"ecosystem":"PyPI","name":"langflow-base","purl":"pkg:pypi/langflow-base","ranges":["<0.9.1"],"fixed":["0.9.1"]}]}],"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."]}