{"action":"Upgrade langflow to 1.9.1 or later.","affected":[{"fixed":"1.9.1","introduced":"0"}],"component":"langflow","cve_ids":["CVE-2026-55450"],"ecosystem":"PyPI","epss":0.0119,"exploited":false,"fixed_versions":["1.9.1"],"ghsa_id":"GHSA-x223-p2gf-v735","id":"tcs_01M5KGY9G5W8HSZKY7A1FXWCY4","modified_at":"2026-06-26T00:00:06.051127409Z","published_at":"2026-06-23T17:17:08.663Z","references":["https://osv.dev/vulnerability/PYSEC-2026-224","https://github.com/langflow-ai/langflow/pull/12831","https://github.com/langflow-ai/langflow/security/advisories/GHSA-x223-p2gf-v735"],"severity":{"label":"critical","score":9.3},"sources":[{"source":"osv","source_id":"PYSEC-2026-224","url":"https://osv.dev/vulnerability/PYSEC-2026-224"}],"summary":"Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, unauthenticated users can upload any amount of data to the server without any limitations. No need for an"}