{"id":"CVE-2026-102139","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102139","generatedAt":"2026-10-28T00:54:02.470Z","title":"An authorization check in the large file exchange feature of Kiteworks Email Protection Gateway did not correctly establish that the requesting user was a party to the package being requested.","description":"An authorization check in the large file exchange feature of Kiteworks Email Protection Gateway did not correctly establish that the requesting user was a party to the package being requested. An authenticated user of that optional feature could read the subject, message body, and attachments of packages they neither sent nor received.","published":"2026-09-30T21:17:03.000Z","lastModified":"2026-10-07T15:01:35.000Z","status":"Analyzed","sourceIdentifier":"9119a7d8-5eab-497f-8521-727c672e3725","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-639","CWE-863"],"affected":["accellion/kiteworks"],"epss":{"score":0.00394,"percentile":0.33398,"date":"2026-10-26","history":[{"date":"2026-10-01","score":0.00354,"percentile":0.26698}]},"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 (0.39%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T21:17:03.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-09-30T21:17:02.663Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/kiteworks/security-advisories/security/advisories/GHSA-fp46-xhg8-vpgm","tags":["Vendor Advisory"],"source":"9119a7d8-5eab-497f-8521-727c672e3725"},{"url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json","tags":["Broken Link"],"source":"9119a7d8-5eab-497f-8521-727c672e3725"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102139","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."}