{"answers":{"affected":"3 open source packages ship an affected version, including langflow.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6599 exists.","fix":"No fix has been published for CVE-2026-6599 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-6599 is a medium-severity code injection vulnerability in langflow-ai langflow, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-6599 and fix it if it is affected.\n\nWhat it is: CVE-2026-6599 is a medium-severity code injection vulnerability in langflow-ai langflow, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6599 exists.\n\nAffected packages and fixed versions:\n- langflow (PyPI): affected all versions up to 1.8.3; no fix listed\n- langflow (PyPI): affected all versions up to 1.8.3; no fix listed\n- langflow (PyPI): affected all versions up to 1.8.3; no fix listed\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-2026-6599/ (Markdown: https://insights.sbomify.com/CVE-2026-6599/index.md)","id":"CVE-2026-6599","markdown":"https://insights.sbomify.com/CVE-2026-6599/index.md","name":"CVE-2026-6599","record":{"aliases":["GHSA-v66p-f7x3-4794","PYSEC-2026-2569"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Langflow AI platform","requires_auth":"low_privilege","summary":"Remote attackers can inject code via the X-Forwarded-For header in the MCP Configuration API, potentially executing arbitrary commands.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"},{"id":"CWE-707","name":"Improper Neutralization"}],"description":"A vulnerability was detected in langflow-ai langflow up to 1.8.3. The impacted element is the function get_client_ip/install_mcp_config of the file src/backend/base/langflow/api/v1/mcp_projects.py of the component Model Context Protocol Configuration API. Performing a manipulation of the argument X-Forwarded-For results in injection. The attack may be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"langflow-ai langflow Model Context Protocol Configuration API mcp_projects.py install_mcp_config injection","id":"CVE-2026-6599","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"langflow-ai langflow Frontend React Component Rendering edit-message.tsx cross site scripting","id":"CVE-2026-6600"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["1.8.3"],"package":"langflow","purl":null,"source":"GHSA-v66p-f7x3-4794"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["1.8.3"],"package":"langflow","purl":"pkg:pypi/langflow","source":"GHSA-v66p-f7x3-4794"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["1.8.3"],"package":"langflow","purl":"pkg:pypi/langflow","source":"PYSEC-2026-2569"}],"prev":{"headline":"langflow-ai langflow Project Creation Endpoint projects.py encrypt_auth_settings cleartext storage in file","id":"CVE-2026-6598"},"products":["langflow"],"published":"2026-04-20","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-20","vendors":["langflow-ai"]},"summary":"Remote attackers can inject code via the X-Forwarded-For header in the MCP Configuration API, potentially executing arbitrary commands.","url":"https://insights.sbomify.com/CVE-2026-6599/"}