{"id":"CVE-2026-4337","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4337","generatedAt":"2026-10-28T01:45:25.027Z","title":"Unrestricted Upload of File with Dangerous Type vulnerability in the PuMuKIT application allows a unauthenticated user to upload any type of file to the server, and to any path where the web server user has write permissions.","description":"Unrestricted Upload of File with Dangerous Type vulnerability in the PuMuKIT application allows a unauthenticated user to upload any type of file to the server, and to any path where the web server user has write permissions. This could also allow them to delete files.","published":"2026-10-27T12:17:08.000Z","lastModified":"2026-10-27T15:02:48.000Z","status":"Deferred","sourceIdentifier":"cve-coordination@incibe.es","cvss":{"version":"4.0","score":8.8,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L/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":null,"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unscored. Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-27T12:17:08.000Z","detail":{"score":"8.8","severity":"HIGH","publishedAt":"2026-10-27T12:17:08.053Z"},"summary":"New CVE, high severity (CVSS 8.8)."}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/unrestricted-upload-file-pumukit-application","source":"cve-coordination@incibe.es"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-4337","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."}