{"answers":{"affected":"6 open source packages ship an affected version, including n8n. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-56776 in the wild and no public exploit code.","fix":"Upgrade n8n to a fixed version for your release line: 1.123.55, 2.25.7 or 2.26.2.","what":"CVE-2026-56776 is a medium-severity missing authorization vulnerability in N8n N8n, published on 8 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-56776 and fix it if it is affected.\n\nWhat it is: CVE-2026-56776 is a medium-severity missing authorization vulnerability in N8n N8n, published on 8 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-56776 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- n8n (npm): affected all versions; fixed in 1.123.55\n- n8n (npm): affected all versions; fixed in 1.123.55\n- n8n (npm): affected from 2.0.0-rc.0; fixed in 2.25.7\n- n8n (npm): affected from 2.0.0-rc.0; fixed in 2.25.7\n- n8n (npm): affected from 2.26.0; fixed in 2.26.2\n- n8n (npm): affected from 2.26.0; fixed in 2.26.2\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-2026-56776/ (Markdown: https://insights.sbomify.com/CVE-2026-56776/index.md)","id":"CVE-2026-56776","markdown":"https://insights.sbomify.com/CVE-2026-56776/index.md","name":"CVE-2026-56776","record":{"aliases":["GHSA-hv7x-3x78-gx53","GHSA-xhqv-vmw5-79pm","MINI-5v6w-j23r-jj7p","MINI-w862-9vwh-xppv","ROOT-APP-NPM-GHSA-hv7x-3x78-gx53"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"n8n workflow automation","requires_auth":"low_privilege","summary":"Authenticated users with read-only workflow access can execute workflows due to incorrect OAuth scope validation, causing unintended side effects.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"n8n","vendor":"n8n"}],"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:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/test-runs/new endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a workflow can trigger a real evaluation test run, causing the workflow to execute via the internal workflow runner and resulting in unintended outbound API calls, data mutations, or other side effects in connected downstream systems. The issue primarily affects instances using the Evaluations feature where RBAC project roles grant workflow:read without workflow:execute.","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 - Incorrect OAuth Scope Validation in Workflow Test Run Endpoint","id":"CVE-2026-56776","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"n8n:n8n","products":["n8n:n8n"],"type":"missing_authorization","year":"2026"},"n_packages":6,"n_references":2,"next":{"headline":"n8n - AST Validator Bypass in Python Code Node","id":"CVE-2026-56777"},"packages":[{"ecosystem":"npm","fixed":["1.123.55"],"introduced":["0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-hv7x-3x78-gx53"},{"ecosystem":"npm","fixed":["1.123.55"],"introduced":["0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-hv7x-3x78-gx53"},{"ecosystem":"npm","fixed":["2.25.7"],"introduced":["2.0.0-rc.0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-hv7x-3x78-gx53"},{"ecosystem":"npm","fixed":["2.25.7"],"introduced":["2.0.0-rc.0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-hv7x-3x78-gx53"},{"ecosystem":"npm","fixed":["2.26.2"],"introduced":["2.26.0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-hv7x-3x78-gx53"},{"ecosystem":"npm","fixed":["2.26.2"],"introduced":["2.26.0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-hv7x-3x78-gx53"}],"prev":{"headline":"n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints","id":"CVE-2026-56775"},"products":["n8n"],"published":"2026-07-08","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":"2026-10-29","vendors":["n8n"]},"summary":"Authenticated users with read-only workflow access can execute workflows due to incorrect OAuth scope validation, causing unintended side effects.","url":"https://insights.sbomify.com/CVE-2026-56776/"}