{"id":"CVE-2026-102126","aliases":["EUVD-2026-90291"],"status":"published","title":"Kiteworks Core Stored Cross-site Scripting (XSS)","description":"A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an administrator holding only a single, narrowly scoped delegated permission to store crafted content that later executes arbitrary JavaScript in the authenticated session of a System Administrator who views the affected page. This could have permitted the lower-privileged administrator to escalate to full administrative control of the tenant, including the creation of a new administrative account.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0033,"percentile":0.26509,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-30T20:15:09Z","modified":"2026-10-07T14:10:17Z","products":[{"vendor":"accellion","product":"kiteworks"},{"vendor":"kiteworks","product":"core"},{"vendor":"opnsense","product":"core"}],"references":[{"url":"https://github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json","tags":["third-party-advisory","Broken Link"]}],"sources":{"cve":[{"id":"CVE-2026-102126","title":"Kiteworks Core Stored Cross-site Scripting (XSS)","description":"A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an administrator holding only a single, narrowly scoped delegated permission to store crafted content that later executes arbitrary JavaScript in the authenticated session of a System Administrator who views the affected page. This could have permitted the lower-privileged administrator to escalate to full administrative control of the tenant, including the creation of a new administrative account.","status":"published","published":"2026-09-30T20:15:09.284Z","modified":"2026-10-01T13:37:05.091Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:38:54.394896Z"}],"euvd":[{"id":"EUVD-2026-90291","description":"A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an administrator holding only a single, narrowly scoped delegated permission to store crafted content that later executes arbitrary JavaScript in the authenticated session of a System Administrator who views the affected page. This could have permitted the lower-privileged administrator to escalate to full administrative control of the tenant, including the creation of a new administrative account.","status":"published","published":"2026-09-30T20:15:09Z","modified":"2026-10-01T13:37:05Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T17:27:46.15359Z"}],"nvd":[{"id":"CVE-2026-102126","description":"A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an administrator holding only a single, narrowly scoped delegated permission to store crafted content that later executes arbitrary JavaScript in the authenticated session of a System Administrator who views the affected page. This could have permitted the lower-privileged administrator to escalate to full administrative control of the tenant, including the creation of a new administrative account.","status":"published","published":"2026-09-30T21:17:00.963Z","modified":"2026-10-07T14:10:17.597Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:53.097633Z"}]}}