{"id":"CVE-2026-102366","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102366","generatedAt":"2026-10-28T01:12:12.403Z","title":"mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation.","description":"mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation. Attackers with any authenticated token can upload HTML or SVG files that execute scripts in administrator browsers when accessed from the local storage path, resulting in stored cross-site scripting.","published":"2026-09-29T00:17:04.000Z","lastModified":"2026-09-30T17:32:07.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":2.1,"severity":"LOW","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-434"],"affected":[],"epss":{"score":0.00163,"percentile":0.05452,"date":"2026-10-26","history":[{"date":"2026-09-29","score":0.00163,"percentile":0.04897}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T00:17:04.000Z","detail":{"score":"2.1","severity":"LOW","publishedAt":"2026-09-29T00:17:03.917Z"},"summary":"New CVE, low severity (CVSS 2.1)."}],"references":[{"url":"https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9ac96c/mall4j/A03_admin_file_upload_xss.py","source":"disclosure@vulncheck.com"},{"url":"https://github.com/gz-yami/mall4j","source":"disclosure@vulncheck.com"},{"url":"https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-admin/src/main/java/com/yami/shop/admin/controller/FileController.java#L44-L64","source":"disclosure@vulncheck.com"},{"url":"https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-service/src/main/java/com/yami/shop/service/impl/AttachFileServiceImpl.java#L62-L81","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/mall4j-through-4.0-unrestricted-file-upload-in-admin-file-endpoints","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102366","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}