{"answers":{"affected":"6 open source packages ship an affected version, including langflow and langflow-base. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21445 exists.","fix":"Upgrade langflow to 1.7.1 or later.","what":"CVE-2026-21445 is a high-severity missing authorization vulnerability in Langflow Langflow, published on 2 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21445 and fix it if it is affected.\n\nWhat it is: CVE-2026-21445 is a high-severity missing authorization vulnerability in Langflow Langflow, published on 2 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21445 exists.\n\nAffected packages and fixed versions:\n- langflow (PyPI): affected all versions; fixed in 1.7.1\n- langflow (PyPI): affected all versions; fixed in 1.7.1\n- langflow (PyPI): affected all versions; fixed in 1.7.1\n- langflow-base (PyPI): affected all versions; fixed in 0.7.1\n- langflow-base (PyPI): affected all versions; fixed in 0.7.1\n- langflow-base (PyPI): affected all versions; fixed in 0.7.1\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-2026-21445/ (Markdown: https://insights.sbomify.com/CVE-2026-21445/index.md)","id":"CVE-2026-21445","markdown":"https://insights.sbomify.com/CVE-2026-21445/index.md","name":"CVE-2026-21445","record":{"aliases":["GHSA-c5cp-vx83-jhqx","PYSEC-2026-1524","PYSEC-2026-2571"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"AI workflow builder","requires_auth":"none","summary":"Unauthenticated attackers can access sensitive user data and perform destructive operations on Langflow API endpoints due to missing authentication controls.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"langflow","vendor":"langflow"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":"2026-01-04","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-01-04T02:22:42Z","kind":"github_poc","ref":"https://github.com/codeb0ssx/CVE-2026-21445-PoC","stars":1,"title":"Academic proof-of-concept demonstrating CVE-2026-21445 [LangFlow] for authorized security research."},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-21445.yaml","stars":null,"title":"Langflow - Broken Access Control"}],"tier":"weaponised"},"has_fix":true,"headline":"Langflow Missing Authentication on Critical API Endpoints","id":"CVE-2026-21445","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"langflow:langflow","products":["langflow:langflow"],"type":"missing_authorization","year":"2026"},"n_packages":6,"n_references":2,"next":{"headline":"Bagisto Missing Authentication on Installer API Endpoints","id":"CVE-2026-21446"},"packages":[{"ecosystem":"PyPI","fixed":["1.7.1"],"introduced":["0"],"last_affected":[],"package":"langflow","purl":null,"source":"GHSA-c5cp-vx83-jhqx"},{"ecosystem":"PyPI","fixed":["1.7.1"],"introduced":["0"],"last_affected":[],"package":"langflow","purl":"pkg:pypi/langflow","source":"GHSA-c5cp-vx83-jhqx"},{"ecosystem":"PyPI","fixed":["1.7.1"],"introduced":["0"],"last_affected":[],"package":"langflow","purl":"pkg:pypi/langflow","source":"PYSEC-2026-1524"},{"ecosystem":"PyPI","fixed":["0.7.1"],"introduced":["0"],"last_affected":[],"package":"langflow-base","purl":null,"source":"GHSA-c5cp-vx83-jhqx"},{"ecosystem":"PyPI","fixed":["0.7.1"],"introduced":["0"],"last_affected":[],"package":"langflow-base","purl":"pkg:pypi/langflow-base","source":"GHSA-c5cp-vx83-jhqx"},{"ecosystem":"PyPI","fixed":["0.7.1"],"introduced":["0"],"last_affected":[],"package":"langflow-base","purl":"pkg:pypi/langflow-base","source":"PYSEC-2026-2571"}],"prev":{"headline":"libtpms returns wrong initialization vector when certain symmetric ciphers are used","id":"CVE-2026-21444"},"products":["langflow"],"published":"2026-01-02","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":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-26","vendors":["langflow-ai"]},"summary":"Unauthenticated attackers can access sensitive user data and perform destructive operations on Langflow API endpoints due to missing authentication controls.","url":"https://insights.sbomify.com/CVE-2026-21445/"}