{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-103251 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-103251 is a high-severity missing authorization vulnerability in n8n-io n8n, published on 1 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-103251 and fix it if it is affected.\n\nWhat it is: CVE-2026-103251 is a high-severity missing authorization vulnerability in n8n-io n8n, published on 1 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-103251 in the wild and no public exploit code.\n\nAffected product: n8n-io n8n. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-103251/ (Markdown: https://insights.sbomify.com/CVE-2026-103251/index.md)","id":"CVE-2026-103251","markdown":"https://insights.sbomify.com/CVE-2026-103251/index.md","name":"CVE-2026-103251","record":{"aliases":["GHSA-c2h5-4pr8-j687","GHSA-fmmv-p585-7c8x","MINI-7gj2-vmjj-c5vq"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"n8n workflow automation","requires_auth":"low_privilege","summary":"Attackers with Redis write access can bypass validation to install arbitrary npm packages in n8n queue mode, leading to code execution.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments. Attackers with Redis write access can bypass name validation, permission checks, checksum verification, and npm safety checks to install arbitrary npm packages across all cluster instances without authentication.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub","id":"CVE-2026-103251","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"n8n before 1.123.80, 2.39.6, and 2.40.1 Information Disclosure via Credential Test Endpoint","id":"CVE-2026-103252"},"packages":[],"prev":{"headline":"n8n before 1.123.80, 2.39.6, and 2.40.1 NoSQL Injection via MongoDB Chat Memory","id":"CVE-2026-103250"},"products":["n8n"],"published":"2026-10-01","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["n8n-io"]},"summary":"Attackers with Redis write access can bypass validation to install arbitrary npm packages in n8n queue mode, leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-103251/"}