{"id":"CVE-2025-53939","aliases":["EUVD-2025-199894"],"status":"published","title":"Kiteworks Core is vulnerable to Improper Input Validation","description":"Kiteworks is a private data network (PDN). Prior to version 9.1.0, improper input validation when managing roles of a shared folder could lead to unexpectedly elevate another user's permissions on the share. This issue has been patched in version 9.1.0.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00789,"percentile":0.56739,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2025-11-29T02:25:46Z","modified":"2026-10-07T20:10:01Z","products":[{"vendor":"accellion","product":"kiteworks"},{"vendor":"kiteworks","product":"security-advisories"}],"references":[{"url":"https://github.com/kiteworks/security-advisories/security/advisories/GHSA-hpf5-6376-2565","tags":["x_refsource_CONFIRM","Patch","Third Party Advisory"]}],"sources":{"cve":[{"id":"CVE-2025-53939","title":"Kiteworks Core is vulnerable to Improper Input Validation","description":"Kiteworks is a private data network (PDN). Prior to version 9.1.0, improper input validation when managing roles of a shared folder could lead to unexpectedly elevate another user's permissions on the share. This issue has been patched in version 9.1.0.","status":"published","published":"2025-11-29T02:25:46.458Z","modified":"2025-12-01T15:37:03.826Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:48.853452Z"}],"euvd":[{"id":"EUVD-2025-199894","description":"Kiteworks is a private data network (PDN). Prior to version 9.1.0, improper input validation when managing roles of a shared folder could lead to unexpectedly elevate another user's permissions on the share. This issue has been patched in version 9.1.0.","status":"published","published":"2025-11-29T02:25:46Z","modified":"2025-12-01T15:37:03Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T19:49:11.947161Z"}],"nvd":[{"id":"CVE-2025-53939","description":"Kiteworks is a private data network (PDN). Prior to version 9.1.0, improper input validation when managing roles of a shared folder could lead to unexpectedly elevate another user's permissions on the share. This issue has been patched in version 9.1.0.","status":"published","published":"2025-11-29T03:15:59.153Z","modified":"2026-10-07T20:10:01.97Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:11:46.94029Z"}]}}