{"answers":{"affected":"2 open source packages ship an affected version, including express-fileupload. It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-27261 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2022-27261 is a high-severity vulnerability in n/a, published on 12 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-27261 and fix it if it is affected.\n\nWhat it is: CVE-2022-27261 is a high-severity vulnerability in n/a, published on 12 Apr 2022. 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-2022-27261 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- express-fileupload (npm): affected all versions up to 1.3.1; no fix listed\n- express-fileupload (npm): affected all versions up to 1.3.1; no fix listed\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-2022-27261/ (Markdown: https://insights.sbomify.com/CVE-2022-27261/index.md)","id":"CVE-2022-27261","markdown":"https://insights.sbomify.com/CVE-2022-27261/index.md","name":"CVE-2022-27261","record":{"aliases":["GHSA-w4m6-x6c2-j5c9","MINI-fvfc-rpp5-982c"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js file upload library","requires_auth":"none","summary":"Attackers can overwrite server files by uploading multiple files with identical names in Express-FileUpload.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"express-fileupload","vendor":"express-fileupload_project"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"An arbitrary file write vulnerability in Express-FileUpload v1.3.1 allows attackers to upload multiple files with the same name, causing an overwrite of files in the web application server.","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":"Express-FileUpload Arbitrary File Overwrite","id":"CVE-2022-27261","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"file_upload","year":"2022"},"n_packages":2,"n_references":2,"next":{"headline":"File upload in n/a","id":"CVE-2022-27262"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["1.3.1"],"package":"express-fileupload","purl":null,"source":"GHSA-w4m6-x6c2-j5c9"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["1.3.1"],"package":"express-fileupload","purl":"pkg:npm/express-fileupload","source":"GHSA-w4m6-x6c2-j5c9"}],"prev":{"headline":"Unrestricted Upload of File with Dangerous Type in ButterCMS","id":"CVE-2022-27260"},"products":["n/a"],"published":"2022-04-12","related":[{"cvss_score":9.8,"headline":"File upload in n/a","id":"CVE-2022-27140","kev_date_added":null,"published":"2022-04-12"},{"cvss_score":7.5,"headline":"Prototype Pollution","id":"CVE-2020-7699","kev_date_added":null,"published":"2020-07-30"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Attackers can overwrite server files by uploading multiple files with identical names in Express-FileUpload.","url":"https://insights.sbomify.com/CVE-2022-27261/"}