{"answers":{"affected":"6 open source packages ship an affected version, including n8n. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-42230 in the wild and no public exploit code.","fix":"Upgrade n8n to a fixed version for your release line: 1.123.32, 2.17.4 or 2.18.1.","what":"CVE-2026-42230 is a medium-severity vulnerability in N8n N8n, published on 4 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-42230 and fix it if it is affected.\n\nWhat it is: CVE-2026-42230 is a medium-severity vulnerability in N8n N8n, published on 4 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-42230 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- n8n (npm): affected all versions; fixed in 1.123.32\n- n8n (npm): affected all versions; fixed in 1.123.32\n- n8n (npm): affected from 2.0.0; fixed in 2.17.4\n- n8n (npm): affected from 2.0.0; fixed in 2.17.4\n- n8n (npm): affected from 2.18.0; fixed in 2.18.1\n- n8n (npm): affected from 2.18.0; fixed in 2.18.1\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-2026-42230/ (Markdown: https://insights.sbomify.com/CVE-2026-42230/index.md)","id":"CVE-2026-42230","markdown":"https://insights.sbomify.com/CVE-2026-42230/index.md","name":"CVE-2026-42230","record":{"aliases":["GHSA-f6x8-65q6-j9m9"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"workflow automation platform","requires_auth":"none","summary":"An attacker can redirect users to malicious sites via the MCP OAuth consent flow if they deny the request, enabling phishing attacks.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"n8n","vendor":"n8n"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /mcp-oauth/register endpoint accepted OAuth client registrations without authentication, allowing arbitrary redirect_uri values to be registered. When a user denies the MCP OAuth consent dialog, the handleDeny handler redirects the user to the registered redirect_uri without validation, enabling an open redirect to an attacker-controlled URL. An attacker can craft a phishing link and send it to a victim; if the victim clicks \"Deny\" on the consent page, they are silently redirected to an external site. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.","ecosystems":["npm"],"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: Open Redirect in MCP OAuth Consent Flow","id":"CVE-2026-42230","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"n8n:n8n","products":["n8n:n8n"],"type":"open_redirect","year":"2026"},"n_packages":6,"n_references":1,"next":{"headline":"n8n: Prototype Pollution in XML Webhook Body Parser Leads to RCE","id":"CVE-2026-42231"},"packages":[{"ecosystem":"npm","fixed":["1.123.32"],"introduced":["0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-f6x8-65q6-j9m9"},{"ecosystem":"npm","fixed":["1.123.32"],"introduced":["0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-f6x8-65q6-j9m9"},{"ecosystem":"npm","fixed":["2.17.4"],"introduced":["2.0.0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-f6x8-65q6-j9m9"},{"ecosystem":"npm","fixed":["2.17.4"],"introduced":["2.0.0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-f6x8-65q6-j9m9"},{"ecosystem":"npm","fixed":["2.18.1"],"introduced":["2.18.0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-f6x8-65q6-j9m9"},{"ecosystem":"npm","fixed":["2.18.1"],"introduced":["2.18.0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-f6x8-65q6-j9m9"}],"prev":{"headline":"n8n: SQL Injection in SeaTable Node","id":"CVE-2026-42229"},"products":["n8n"],"published":"2026-05-04","related":[{"cvss_score":10,"headline":"n8n Improper Control of Dynamically-Managed Code Resources","id":"CVE-2025-68613","kev_date_added":"2026-03-11","published":"2025-12-19"},{"cvss_score":10,"headline":"n8n is vulnerable to Remote Code Execution via Arbitrary File Write","id":"CVE-2026-21877","kev_date_added":null,"published":"2026-01-08"},{"cvss_score":10,"headline":"n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling","id":"CVE-2026-21858","kev_date_added":null,"published":"2026-01-07"},{"cvss_score":9.9,"headline":"n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution","id":"CVE-2026-1470","kev_date_added":null,"published":"2026-01-27"},{"cvss_score":9.9,"headline":"n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node","id":"CVE-2025-68668","kev_date_added":null,"published":"2025-12-26"},{"cvss_score":9.5,"headline":"n8n has Unauthenticated Expression Evaluation via Form Node","id":"CVE-2026-27493","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":9.4,"headline":"n8n: HTTP Request Node Pagination Prototype Pollution to RCE","id":"CVE-2026-44789","kev_date_added":null,"published":"2026-06-23"}],"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":"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)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-04","vendors":["n8n-io"]},"summary":"An attacker can redirect users to malicious sites via the MCP OAuth consent flow if they deny the request, enabling phishing attacks.","url":"https://insights.sbomify.com/CVE-2026-42230/"}