{"answers":{"affected":"4 open source packages ship an affected version, including n8n. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-56777 in the wild and no public exploit code.","fix":"Upgrade n8n to a fixed version for your release line: 2.25.7 or 2.26.2.","what":"CVE-2026-56777 is a medium-severity vulnerability in N8n N8n, published on 30 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-56777 and fix it if it is affected.\n\nWhat it is: CVE-2026-56777 is a medium-severity vulnerability in N8n N8n, published on 30 Jun 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-2026-56777 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- n8n (npm): affected all versions; fixed in 2.25.7\n- n8n (npm): affected all versions; 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-2026-56777/ (Markdown: https://insights.sbomify.com/CVE-2026-56777/index.md)","id":"CVE-2026-56777","markdown":"https://insights.sbomify.com/CVE-2026-56777/index.md","name":"CVE-2026-56777","record":{"aliases":["GHSA-jwm3-qcfw-c5pp","GHSA-x2rh-rhm8-cv8v","MINI-542r-f3j8-vxp6","MINI-6mgr-v25c-g9mm","ROOT-APP-NPM-GHSA-jwm3-qcfw-c5pp"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"n8n workflow automation","requires_auth":"low_privilege","summary":"Authenticated users can bypass AST validation in n8n's Python Code node to access task executor namespaces and potentially disclose environment variables.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"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:N/VA:N/SC:L/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-184","name":"Incomplete List of Disallowed Inputs"}],"description":"n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree (AST) security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module namespace. The issue only affects self-hosted instances where the Python Task Runner is enabled; where N8N_BLOCK_RUNNER_ENV_ACCESS is configured to allow it, this can disclose environment variables accessible to the task runner process.","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 - AST Validator Bypass in Python Code Node","id":"CVE-2026-56777","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"n8n:n8n","products":["n8n:n8n"],"type":"security_feature_bypass","year":"2026"},"n_packages":4,"n_references":2,"next":{"headline":"n8n - Authorization Bypass in Public API Execution Retry Endpoint","id":"CVE-2026-56778"},"packages":[{"ecosystem":"npm","fixed":["2.25.7"],"introduced":["0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-jwm3-qcfw-c5pp"},{"ecosystem":"npm","fixed":["2.25.7"],"introduced":["0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-jwm3-qcfw-c5pp"},{"ecosystem":"npm","fixed":["2.26.2"],"introduced":["2.26.0"],"last_affected":[],"package":"n8n","purl":null,"source":"GHSA-jwm3-qcfw-c5pp"},{"ecosystem":"npm","fixed":["2.26.2"],"introduced":["2.26.0"],"last_affected":[],"package":"n8n","purl":"pkg:npm/n8n","source":"GHSA-jwm3-qcfw-c5pp"}],"prev":{"headline":"n8n - Incorrect OAuth Scope Validation in Workflow Test Run Endpoint","id":"CVE-2026-56776"},"products":["n8n"],"published":"2026-06-30","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 can bypass AST validation in n8n's Python Code node to access task executor namespaces and potentially disclose environment variables.","url":"https://insights.sbomify.com/CVE-2026-56777/"}