{"id":"CVE-2022-27261","aliases":["GHSA-w4m6-x6c2-j5c9"],"url":"https://o3.security/vulnerability/CVE-2022-27261","summary":"Express-FileUpload Arbitrary File Overwrite","details":"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. This vulnerability is [debated by the package author](https://github.com/richardgirges/express-fileupload/issues/316).","published":"2022-04-12T16:29:01Z","modified":"2026-08-12T03:51:12.155052705Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.01359,"percentile":0.69175,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"express-fileupload","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://www.npmjs.com/package/express-fileupload"},{"type":"WEB","url":"https://www.youtube.com/watch?v=3ROHB3ck4tA"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/27xxx/CVE-2022-27261.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-27261"},{"type":"WEB","url":"https://github.com/richardgirges/express-fileupload/issues/312"},{"type":"WEB","url":"https://github.com/richardgirges/express-fileupload/issues/316"},{"type":"PACKAGE","url":"https://github.com/richardgirges/express-fileupload"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:12.155052705Z"}}