{"answers":{"affected":"2 open source packages ship an affected version, including basic-ftp. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27699 exists.","fix":"Upgrade basic-ftp to 5.2.0 or later.","what":"CVE-2026-27699 is a critical path traversal vulnerability in patrickjuchli basic-ftp, published on 25 Feb 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-2026-27699 and fix it if it is affected.\n\nWhat it is: CVE-2026-27699 is a critical path traversal vulnerability in patrickjuchli basic-ftp, published on 25 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27699 exists.\n\nAffected packages and fixed versions:\n- basic-ftp (npm): affected all versions; fixed in 5.2.0\n- basic-ftp (npm): affected all versions; fixed in 5.2.0\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-2026-27699/ (Markdown: https://insights.sbomify.com/CVE-2026-27699/index.md)","id":"CVE-2026-27699","markdown":"https://insights.sbomify.com/CVE-2026-27699/index.md","name":"CVE-2026-27699","record":{"aliases":["DEBIAN-CVE-2026-27699","ECHO-1bbc-f7da-7503","GHSA-5rq4-664w-9x2c","MINI-28vx-rvq4-85rf","MINI-4wfh-jq59-hwpr","MINI-5wgj-3wjf-ff6w","MINI-9hxf-69x8-72mm","MINI-9jjf-fhcq-52j3","MINI-c5c4-g8wp-646q","MINI-f3r2-4f5r-5gw2","MINI-g9wp-3845-hf67","MINI-h4fc-qr63-344w","MINI-hwwj-6755-2r2v","MINI-rw2x-h7mm-p282","MINI-x29c-m24j-f5g3","MINI-x44g-j7mh-7wqc","MINI-xh7q-jcc6-pv79","ROOT-APP-NPM-CVE-2026-27699","UBUNTU-CVE-2026-27699"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js FTP client","requires_auth":"none","summary":"A malicious FTP server can write files outside the intended directory via path traversal in the basic-ftp library's downloadToDir method.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"basic-ftp","vendor":"patrickjuchli"}],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"The `basic-ftp` FTP client library for Node.js contains a path traversal vulnerability (CWE-22) in versions prior to 5.2.0 in the `downloadToDir()` method. A malicious FTP server can send directory listings with filenames containing path traversal sequences (`../`) that cause files to be written outside the intended download directory. Version 5.2.0 patches the issue.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Basic FTP has Path Traversal Vulnerability in its downloadToDir() method","id":"CVE-2026-27699","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Hono is Vulnerable to Authentication Bypass by IP Spoofing in AWS Lambda ALB conninfo","id":"CVE-2026-27700"},"packages":[{"ecosystem":"npm","fixed":["5.2.0"],"introduced":["0"],"last_affected":[],"package":"basic-ftp","purl":null,"source":"GHSA-5rq4-664w-9x2c"},{"ecosystem":"npm","fixed":["5.2.0"],"introduced":["0"],"last_affected":[],"package":"basic-ftp","purl":"pkg:npm/basic-ftp","source":"GHSA-5rq4-664w-9x2c"}],"prev":{"headline":"baserCMS: SQL injection vulnerability in blog post","id":"CVE-2026-27697"},"products":["basic-ftp"],"published":"2026-02-25","related":[{"cvss_score":8.6,"headline":"FTP Command Injection via CRLF in basic-ftp","id":"CVE-2026-39983","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":7.5,"headline":"basic-ftp vulnerable to denial of service via unbounded memory consumption in Client.list()","id":"CVE-2026-41324","kev_date_added":null,"published":"2026-04-24"}],"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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-27","vendors":["patrickjuchli"]},"summary":"A malicious FTP server can write files outside the intended directory via path traversal in the basic-ftp library's downloadToDir method.","url":"https://insights.sbomify.com/CVE-2026-27699/"}