{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-103255 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-103255 is a high-severity path traversal vulnerability in n8n-io n8n, published on 1 Oct 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-2026-103255 and fix it if it is affected.\n\nWhat it is: CVE-2026-103255 is a high-severity path traversal vulnerability in n8n-io n8n, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-103255 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-2026-103255/ (Markdown: https://insights.sbomify.com/CVE-2026-103255/index.md)","id":"CVE-2026-103255","markdown":"https://insights.sbomify.com/CVE-2026-103255/index.md","name":"CVE-2026-103255","record":{"aliases":["GHSA-34g6-xwv9-46f3","GHSA-rqch-9jrh-cr8w","MINI-wh46-c6hj-4gx2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"n8n workflow automation","requires_auth":"none","summary":"Attackers can traverse paths in the Supabase node to bypass security controls and access or modify unauthorized data via unvalidated tableId parameters.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"}],"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 path traversal vulnerability in the Supabase node where the tableId parameter is inserted into request paths without validation. Attackers can exploit workflows binding tableId to untrusted input to traverse to Auth and Storage APIs using the administrative serviceRole key, bypassing Row Level Security and enabling unauthorized data access and modification.","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 Path Traversal and Query Injection via Supabase","id":"CVE-2026-103255","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"n8n before 2.39.6 and 2.40.x before 2.40.1 Credentials Leak via preAuthentication Hook","id":"CVE-2026-103256"},"packages":[],"prev":{"headline":"n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal via Resume URL Generation","id":"CVE-2026-103254"},"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 can traverse paths in the Supabase node to bypass security controls and access or modify unauthorized data via unvalidated tableId parameters.","url":"https://insights.sbomify.com/CVE-2026-103255/"}