{"answers":{"affected":"3 open source packages ship an affected version, including langflow. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55450 exists.","fix":"Upgrade langflow to 1.9.1 or later.","what":"CVE-2026-55450 is a critical vulnerability in Langflow Langflow, published on 23 Jun 2026."},"fix_prompt":"Check this codebase for CVE-2026-55450 and fix it if it is affected.\n\nWhat it is: CVE-2026-55450 is a critical vulnerability in Langflow Langflow, published on 23 Jun 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55450 exists.\n\nAffected packages and fixed versions:\n- langflow (PyPI): affected all versions; fixed in 1.9.1\n- langflow (PyPI): affected all versions; fixed in 1.9.1\n- langflow (PyPI): affected all versions; fixed in 1.9.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55450/ (Markdown: https://insights.sbomify.com/CVE-2026-55450/index.md)","id":"CVE-2026-55450","markdown":"https://insights.sbomify.com/CVE-2026-55450/index.md","name":"CVE-2026-55450","record":{"aliases":["GHSA-x223-p2gf-v735","PYSEC-2026-224"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[{"product":"langflow","vendor":"langflow"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"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 any prior knowledge, only network access to Langflow. This can lead to space exhaustion on the server. In addition, in the response, the absolute path of the uploaded file is reported to the attacker, which is an information leak that can assist in chaining other primitives. This vulnerability is fixed in 1.9.1.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":"2026-10-08","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-10-08T22:48:26Z","kind":"github_poc","ref":"https://github.com/0xredash/CVE-2026-55450","stars":0,"title":"CVE-2026-55450"},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-55450.yaml","stars":null,"title":"Langflow \u003c 1.9.1 - Unauthenticated File Upload"}],"tier":"weaponised"},"has_fix":true,"headline":"Langflow: Unauthenticated file upload leads to DoS (space exhaustion) and information leak","id":"CVE-2026-55450","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"langflow:langflow","products":["langflow:langflow"],"type":null,"year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"gettext-converter: Prototype pollution in js2i18next() via crafted translation keys","id":"CVE-2026-55451"},"packages":[{"ecosystem":"PyPI","fixed":["1.9.1"],"introduced":["0"],"last_affected":[],"package":"langflow","purl":null,"source":"GHSA-x223-p2gf-v735"},{"ecosystem":"PyPI","fixed":["1.9.1"],"introduced":["0"],"last_affected":[],"package":"langflow","purl":"pkg:pypi/langflow","source":"GHSA-x223-p2gf-v735"},{"ecosystem":"PyPI","fixed":["1.9.1"],"introduced":["0"],"last_affected":[],"package":"langflow","purl":"pkg:pypi/langflow","source":"PYSEC-2026-224"}],"prev":{"headline":"mise: Local credential_command executes untrusted config","id":"CVE-2026-55448"},"products":["langflow"],"published":"2026-06-23","related":[{"cvss_score":9.8,"headline":"IBM Langflow Code Injection","id":"CVE-2026-9198","kev_date_added":"2026-08-04","published":"2026-07-17"},{"cvss_score":9.8,"headline":"Langflow Inclusion of Functionality from Untrusted Control Sphere","id":"CVE-2026-0770","kev_date_added":"2026-07-21","published":"2026-01-23"},{"cvss_score":9.8,"headline":"Langflow Missing Authentication","id":"CVE-2025-3248","kev_date_added":"2025-05-05","published":"2025-04-07"},{"cvss_score":9.4,"headline":"Langflow Origin Validation Error","id":"CVE-2025-34291","kev_date_added":"2026-05-21","published":"2025-12-05"},{"cvss_score":9.3,"headline":"Langflow Code Injection","id":"CVE-2026-33017","kev_date_added":"2026-03-25","published":"2026-03-20"},{"cvss_score":8.4,"headline":"Langflow Authorization Bypass Through User-Controlled Key","id":"CVE-2026-55255","kev_date_added":"2026-07-07","published":"2026-06-23"},{"cvss_score":10,"headline":"Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows","id":"CVE-2026-10134","kev_date_added":null,"published":"2026-06-30"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-23","vendors":["langflow-ai"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-55450/"}